Recaps

Teiichi reunited with Kanae and Shinobu, shared what he knew about Upper Rank Two, and helped the Hashira establish regular training and sparring. After returning home, he investigated disappearances on Shoura Island, uncovered the village chief’s coercion by a demon, and searched underwater for the creature.

• Kanae told Shinobu that Teiichi had helped save her from Upper Rank Two, then shared her past and her hope for human-demon coexistence with Teiichi.
• Teiichi admitted he had feelings for Kanae, and Kanae made him a haori to wear to the Hashira Meeting.
• At the meeting, Kanae described her encounter with Doma, and Teiichi explained the demon’s abilities and the danger he posed.
• Teiichi defeated Tengen Uzui in two sparring matches, then proposed organized training and Hashira Battles to improve the Corps’ strength.
• Teiichi won the Hashira Battles, defeating Gyomei Himejima and placing first, while Gyomei placed second and Tengen third.
• After returning to Kyushu, Teiichi trained for two months before White Feather sent him to investigate the disappearances on Shoura Island.
• Teiichi learned that the village chief and his son, Hayato, were sending people to a demon, and the chief confessed that it had threatened the village.
• Teiichi left White Feather to guard the chief and Hayato, searched around Chousho Bridge at night, and sank to the seabed after sensing something watching him.

After killing the water demon, Teiichi faced judgment for killing criminals and using one as bait, then chose to leave the Corps rather than abandon his beliefs. He traveled for years, reunited with Tengen, and eventually encountered Upper Rank Three Akaza in the snow, where they began to fight.

• Teiichi killed the water demon after using the village chief as bait, then told White Feather to report the captives hidden beneath the village chief’s house.
• At the Hashira Meeting, Teiichi admitted to killing two criminals and using the village chief as bait, then refused to commit seppuku and chose to leave the Corps.
• Kagaya Ubuyashiki accepted Teiichi’s departure, and the Hashira agreed to record cases of using humans as bait while reducing the punishment for cultivators whose students became demons.
• Teiichi trained at the Butterfly Mansion, grew closer to Kanae, and decided to travel around Japan after discussing his departure with Kanae, Shinobu Kocho, and Kanon.
• Teiichi and Kanae spent time together in Akita City, kissed on the beach, and later exchanged letters while Teiichi traveled for two years.
• Teiichi reunited with Tengen Uzui, sparred with him, and continued traveling until he realized his swordsmanship and physical growth had stalled at nineteen.
• In Hokkaido, Teiichi encountered Akaza, who invited him to become a demon and pursue the Transparent World together, but Teiichi refused.
• Teiichi and Akaza exchanged names and fought, trading rapid attacks as Akaza regenerated from Teiichi’s cuts.

Teiichi defeated Akaza’s escape attempt only to face Kokushibo, who revealed his past as Michikatsu and challenged him in the mountains. Teiichi awakened the Transparent World and fought on with a broken blade, but Kokushibo’s severed blades kept him from reaching his neck.

• Teiichi repeatedly beheaded Akaza, but Akaza regenerated and reached the Supreme Territory before sunrise began to burn him.
• Nakime pulled Akaza into the Infinity Castle, where Muzan reprimanded him and ordered Kokushibo to deal with Teiichi.
• Tanjiro found his family dead and Nezuko turning into a demon, but Giyu spared them after Nezuko protected her brother.
• Kokushibo found Teiichi and revealed that he was Tsugikuni Michikatsu, Yoriichi’s twin brother, who had become a demon to pursue swordsmanship without limits.
• Teiichi and Kokushibo fought with Wind Breathing and Moon Breathing until Kokushibo broke Teiichi’s Nichirin Blade and severely wounded him.
• Teiichi awakened the Transparent World, stopped his bleeding, and used his broken blade to send Kokushibo off balance.
• Teiichi’s wind attacks shattered Kokushibo’s protective blades, but Kokushibo released moon blades from his severed body and forced Teiichi to retreat before he could decapitate him.

Teiichi survived encounters with Kokushibo and Akaza, returned to the Butterfly Mansion, and resumed training while recovering. At the Hashira Meeting, he shared intelligence and combat techniques, then accepted Sanemi’s challenge after the meeting.

• Muzan summoned Kokushibo and the other Upper Ranks back to the Infinity Castle, and Teiichi left the area at sunrise with his blade broken and chest wounded.
• Muzan ordered all six Upper Ranks to search for Teiichi, while Akaza challenged Doma for his rank and was promoted to Upper Rank Two after defeating him.
• Teiichi returned to the Butterfly Mansion, told Kanae, Shinobu Kocho, and Kanon about his encounters with Kokushibo and Akaza, and revealed the severe wound he had concealed.
• Kanae arranged for Teiichi to train Aoi Kanzaki and Kanao, and he explained the Transparent World while recovering and developing his Wind Breathing techniques.
• Teiichi and Kanae grew closer through the New Year celebrations, and he promised they would marry in three years before resuming training at the mansion.
• At the Hashira Meeting, Teiichi warned the Hashira about Upper Rank One and Upper Rank Three and described the Demon Slayer Mark, Transparent World, and Red Nichirin Blade.
• Teiichi taught the Hashira about Wielding the Heavy as Light, which Gyomei Himejima recognized from his experience with heavy weapons.
• After Teiichi declined Tengen Uzui’s invitation to join the next day’s Hashira Battles, Sanemi accused him of making up his claims, and Teiichi challenged Sanemi to experience defeat.