Chapter Summaries

Sera told Herta that he was the Herrscher of Corruption but promised to explain more when he could. After bonding over books and dinner, Herta asked him to help complete her doll project in exchange for whatever payment he wanted.

• Sera told Herta he was a human and a Herrscher, and promised to reveal more when he was able to speak about it.
• Herta invited Sera to call her by her name, and the two discussed books and shared ideas about their fields of expertise.
• Sera noticed it was time to eat, so Herta ordered expensive takeout because she still had work to do.
• After dinner, Herta invited Sera to the lab to help finish her doll project and offered him whatever payment he wanted.

Herta and Sera built and activated the No. 0 Herta Puppet in a hidden underground lab. The newly awakened puppet ended the chapter by asking whether she should call Sera Father and Herta Mother.

• Herta made Sera her assistant on The Blue and granted him the same access permissions as herself.
• Herta led Sera to a concealed underground lab, where they began building the puppet prototype.
• Sera used the authority of Corruption to absorb the blueprints and assisted Herta so efficiently that the work went faster than expected.
• Herta and Sera tested No. 0's intelligent system, then assembled her body and installed the system.
• No. 0 awakened, completed her self-check, and asked whether she should address Sera as Father and Herta as Mother.

Herta and Sera tested No. 0 Puppet’s movement and combat abilities, then created 300 Herta Puppets for assignment across the house. The chapter left No. 0 with a new assignment: discover what kind of person she wanted to become.

• No. 0 Puppet asked whether she should call Herta and Sera her mother and father, and Sera explained that parents needed to love each other.
• Herta tested No. 0’s movement and combat modules, and No. 0 defeated simulated Voidrangers with a giant diamond.
• Herta and Sera produced 300 Herta Puppets, and Herta assigned No. 1 to assess their personalities and abilities and assign them suitable posts.
• Sera asked No. 0 what kind of person she wanted to become, and No. 0 said she did not know.
• Sera and Herta made the question No. 0’s first and most important assignment.

Herta recorded how Seraphis arrived on The Blue, became her research subject, and helped build the Herta Puppet prototype. As Herta planned an amusement-park outing with Sera, he investigated why he had come to The Blue and what his missing memories concealed.

• Herta wrote that she had found Seraphis unconscious, invited him to become her research subject, and learned that he was a human Herrscher with a conceptual authority.
• Herta noted that Seraphis matched her in knowledge and intellect, and that they had built the Herta Puppet prototype together.
• Herta searched for places to visit with Sera, chose the amusement park, and ordered the Federation to clear it for the next day.
• Herta planned a sequence of rides for Sera, ending with the Ferris wheel and fireworks.
• Sera reasoned that his lost memories and sudden arrival on The Blue were connected to a task involving Herta, then kept a possible conclusion to himself.

Sera and Herta spent a day at an amusement park that Herta had cleared for them, and Sera encouraged her to take breaks from her research. As they began the giant pendulum ride, Sera kept his promise to follow Herta’s plan, and she reassured him that he could shout if he got scared.

• Sera and Herta rode a roller coaster, which left Sera dizzy while Herta remained unfazed.
• While riding the pirate ship, Sera asked Herta how long it had been since she had gone out for a stroll, and she estimated about six years.
• Sera suggested that Herta go out and relax more, but she said she would rather send a puppet and connect to it.
• Herta led Sera toward the giant pendulum, and he insisted on sticking to her plan because he had promised.
• As the pendulum began to rise, Herta told Sera to shout if he was scared and promised no one would laugh at him.

Sera and Herta spent the day at the amusement park, sharing a meal before riding the Ferris wheel together. As fireworks lit the sky, Sera watched Herta and reflected on living brightly while life lasted.

• Sera screamed during the giant pendulum ride, then joined Herta for lunch at the restaurant.
• Sera ate three plates of steak before Herta led him to the Ferris wheel.
• Sera invited Herta to ride the Ferris wheel with him, and she accepted.
• As they neared the top, Herta told Sera that fireworks were about to begin.
• Sera watched the fireworks and became absorbed in Herta's reflection in the glass.

Sera and Herta watched fireworks together on a Ferris wheel, where Sera revealed that he would have to return to Amphoreus in a month and described himself as an arrogant Herrscher who wanted to save everyone there. They took a photograph together, and Herta noticed a trace of divinity in Sera’s eyes in the picture, deepening her curiosity about him.

• Sera asked Herta to ride the Ferris wheel with him again on his last day, then told her he would have to return in a month.
• Herta asked what kind of person Sera really was, and Sera said he was an arrogant Herrscher who wanted to save everyone on Amphoreus.
• Herta comforted Sera by telling him to do what he wanted as a genius acknowledged by her.
• Herta secretly took a photograph of Sera beneath the fireworks, and Sera suggested they take one together.
• Sera and Herta posed for a photograph as the fireworks bloomed, and Herta liked the result.
• Herta noticed that Sera’s eyes looked faintly golden and divine in the photograph, while his eyes before her remained azure and full of humanity.

Sera and Herta privately realized their growing affection for each other, and Sera concluded that the countdown was tied to that mutual affection. Herta accepted that Sera came from her future and proposed they try their relationship despite the possibility that he would eventually return.

• After the fireworks, Sera told Herta she would learn why his eyes looked gold in the photo tomorrow, then asked about dinner.
• Sera suspected the countdown increased when Herta's affection for him reached a certain point, but struggled with the idea of exploiting her feelings and realized he had fallen for her.
• Herta reflected on how comfortable and compatible she felt with Sera, admitted she might be falling in love with him, and decided to try accepting those feelings.
• The next morning, Sera told Herta he believed the countdown was tied to affection and that his spacetime was her future.
• Herta said she had already guessed the countdown was linked to mutual affection, acknowledged Sera would eventually return, and suggested they try being together.

Sera revealed his Herrscher of Corruption form to Herta and promised to set out for the stars, then joined her in experiments that linked Imaginary Energy to his Honkai Energy. The chapter left Herta cooking a meal Sera enjoyed after her attempts to use Curios as ingredients repeatedly blew up the kitchen.

• Sera showed Herta his six-winged Herrscher form, and Herta explained that Seraphis meant a fallen seraph.
• Sera and Herta went to the lab, where an experiment showed that Imaginary Energy resembled Sera's Honkai Energy with its cost removed, but was much weaker.
• Herta asked Sera about the god behind Imaginary Energy, but he said he would explain in the future.
• Herta took Sera to the kitchen and repeatedly caused explosions by using Curios as ingredients, until Sera asked her to stop.
• Herta cooked red-braised pork without Curios, and Sera praised the dish before she started preparing another.

Sera took Herta and No. 0 camping, where No. 0 discovered that the stream’s water quality had declined and started purifying it while Herta ordered an investigation. Sera gave Herta a flower he had made, mistaking a purple bellflower for a purple lily, and they set up the tent together.

• Sera chose a mountain for the camping trip, and Herta arranged for the Blue Federation to close it and clear away litter.
• No. 0 joined Sera and Herta, and Herta directed them to a campsite she had visited as a child.
• No. 0 found that the stream’s water quality had declined by 30 percent and installed a purification device, while Herta ordered puppets and the Federation to investigate and issue a public notice.
• Sera found purple flowers nearby and created an everlasting flower to give Herta, who identified it as a purple bellflower but accepted it.
• Sera and Herta set up the tent together, and No. 0 placed insect-repelling devices around it.

Sera caught a piglet for dinner, then explored The Blue with Herta and learned how badly its environment had deteriorated. Herta considered relocating to the galactic frontier, and Sera suggested presenting her future research as magic before inviting her and No. 0 to watch anime.

• Sera caught a domestic piglet, prepared it for roasting, and set it aside to dry.
• Sera and Herta discussed The Blue’s worsening environment after Herta reviewed data from her puppets.
• Herta said she wanted to move somewhere undisturbed, and Sera suggested hiding in an alternate space at the galactic frontier.
• Sera suggested Herta call her questioned claims magic, and Herta showed interest in the idea.
• Sera invited Herta and No. 0 to watch an anime and projected his chosen show inside the tent.

Sera and Miss Herta watched anime together, and Sera conjured a witch outfit that inspired Herta to plan a wand and matching clothes for him. As they camped beneath the moon, Sera explained his love of it, while No. 0 quietly recorded their interactions.

• Sera described Miss Herta as a mysterious witch and conjured a witch outfit from memory for her to see.
• Miss Herta sent the outfit design to No. 1 Herta puppet to have it made and decided to create a wand and an outfit for Sera herself.
• No. 0 secretly recorded Sera and Miss Herta's interactions while they watched anime and roasted a suckling pig.
• Miss Herta noticed Sera gazing at the moon, and he said he loved it because his home had only eternal daylight.
• Sera described the moon as flawless and the stars as knights gathered around a moon princess.

Sera and Miss Herta returned home after watching the moon, and Herta invited him to the Blue Federation’s lantern festival for Qixi. They agreed to wear Xianzhou-style clothes, and Herta began designing outfits for them, including another witch outfit for Sera.

• Sera hid his wings and explained to Miss Herta that his Herrscher form was his true appearance, though he could not remove or hide his halo.
• Miss Herta invited Sera to the lantern festival the next day, and he happily accepted.
• No. 0 offered to prepare Xianzhou-style clothes for the festival, and Sera and Herta agreed.
• Herta designed a purple outfit for herself and an azure-blue and white dress for Sera, complete with a moon-shaped hair clip.
• Herta gave the designs to No. 0 to have puppets make them, then began designing a witch outfit for Sera.

Herta secretly prepared an outfit for Sera and recorded her growing feelings for him in her diary. As they prepared separately for the Qixi lantern festival, Sera planned how to make Herta happy and looked forward to spending the next day with her.

• Herta memorized her outfit design, deleted it, and told No. 0 to have the finished outfits taken to the dressing room without disturbing her.
• Herta asked No. 0 to send her all the photos, then pasted them into her diary as she wrote about falling for Sera and recognizing the humanity and divinity in him.
• Sera practiced making and launching a sky lantern with the Authority of Corruption and decided to save his wish for the festival.
• Sera considered introducing Herta to Ruan Mei and Screwllum so she would have other geniuses to talk to after he left.
• Sera planned to act pleased with Herta's outfit while leaving a deliberate hint that he knew she was trying to surprise him, then went to bed looking forward to the festival.

Sera and Herta dressed in Xianzhou-style clothing for the Qixi lantern festival, sharing a playful, affectionate moment as Herta styled Sera’s hair. No. 0 confirmed that the preparations were complete, and Herta and Sera planned to leave that afternoon.

• Herta showed Sera the clothes she had prepared, and Sera pretended to be surprised to amuse her.
• Herta dressed and applied makeup, then asked Sera whether she looked beautiful; he praised her.
• Herta tied Sera’s hair into a high ponytail and fastened a moon hair clip in it.
• No. 0 reported that she had finished making arrangements and quietly took a picture of Herta and Sera.
• Herta and Sera agreed to go out for the festival that afternoon.

Sera and Miss Herta spent Qixi together, strolling through the festival and making qiaoguo after sharing a meal and watching anime. They began preparing their pastries together, with the chapter ending as they followed the recipe.

• Sera worried about his dwindling time and what he might leave for Miss Herta, then discussed attending Qixi together for the first time.
• Sera and Miss Herta ate noodles, watched anime, and traveled to the event wearing Cognition Filters.
• They collected river lanterns, received a blessing, and interlaced their hands as No. 0 secretly photographed them.
• Sera persuaded Miss Herta to visit a qiaoguo stall, where they chose a moon mold and a purple lily design.
• Sera followed the recipe and kneaded the dough properly after Miss Herta stopped him from punching it.

Sera and Miss Herta made qiaoguo and blessing plaques together at a Qixi Festival stall, where Herta openly expressed how much Sera mattered to her. They hung their wishes side by side and then saw festivalgoers praying to the Path of Propagation for girlfriends.

• Sera and Miss Herta made crescent-shaped qiaoguo, threaded them onto red string, and prepared blessing plaques.
• Sera and Miss Herta teased each other while Sera imbued their plaques with his authority of Corruption.
• Miss Herta said she valued Sera more than a research project and explained that she boldly pursued what she wanted.
• Miss Herta wished that they would meet again beneath the moon, while Sera wrote “See you tomorrow,” and they hung their signed plaques together.
• Sera and Miss Herta shared the qiaoguo and saw a crowd praying to the Propagation plaque for girlfriends.

Sera and Miss Herta wandered through the festival, won a pitch-pot game, and posed for flirtatious photos arranged by No. 0. As the sky darkened, they went to make sky lanterns together.

• Sera and Miss Herta scored a perfect twenty-six points at pitch-pot, then declined the Weaver Girl doll prize.
• No. 0 stepped out of the shadows and asked to photograph Sera and Miss Herta together.
• Miss Herta lifted Sera's chin for a teasing photo, and No. 0 edited the image and planned to share it with every Herta Puppet.
• Sera and Miss Herta took more photos as evening fell, then held hands and headed to make sky lanterns.
• Sera and Miss Herta sat down beside the attendant and prepared to make their lanterns.

Sera and Miss Herta made sky lanterns together and released them from a quiet spot during the Qixi celebration. They shared a tender moment as Miss Herta revealed she had enjoyed their evening as much as Sera had.

• Sera and Miss Herta finished making sky lanterns, and Sera trusted Miss Herta to write his wish without letting him see it.
• Miss Herta wrote a wish in two parts and folded them into heart shapes inside the lanterns.
• Sera and Miss Herta walked hand in hand through the marketplace and found a quiet corner, where Miss Herta realized No. 0 and the other puppets had cleared the spot for them.
• Sera and Miss Herta lit and released their sky lanterns beneath the celestial river of lights.
• Sera told Miss Herta he was happy to share the special night with her, and she admitted she had enjoyed their stroll and shared moment just as much.

Sera and Miss Herta shared a final night together, exchanging promises of a love that would endure across time and space. After Sera revealed that he had only one day left, they joined the festival crowd and set river lanterns afloat together.

• Herta revealed her wish through fireworks, and Sera promised that they would reunite across time, space, and causality.
• Herta asked how much time Sera had left, and he told her that he had one day.
• Sera and Herta left their quiet corner and decided to spend his remaining time together.
• Sera and Herta borrowed a boat and rowed onto the lake with river lanterns.
• Sera and Herta watched the river lanterns beneath the sky lanterns, sharing the festival’s lights together.