Saionji Nanase

Biodata

Feature	Information
Name	Saionji Nanase (西园寺七濑) 16 17
Alias(es)	“Treasure Girl” 167 479 662
Gender	Female 18
Affiliation	Private Moonlight Academy; Class 1-A; Collection Club 87 204 662
Occupation/Role	First-year student; Collection Club founder and de facto leader 87
Family	Daughter of Saionji Koji and Saionji Rikka 478
First Appearance	Chapter 16 16

Background

Nanase was Natsume Chikage's middle-school classmate. He initially failed to recognize her after their reunion because she had become much prettier than he remembered. 16

She comes from the wealthy Saionji family, whose residence is a large villa in Tokyo's Minato Ward. Her father, Saionji Koji, is a major figure in Japan's collecting and auction world and owns Japan's largest auction house. Nanase developed her passion for unusual objects through her family environment. 18 478 485

She entered Private Moonlight Academy as the top-ranked student on its entrance examinations. Later, she and Chikage tied for first place in the school rankings. 36 473 479

Nanase and Chikage were born one day apart. During the Natsume siblings' visit to the Saionji villa, she proposed celebrating their birthdays together. 478

When Chikage was frequently absent for competitions and other commitments, Nanase carefully prepared clear, highlighted class notes so that he could keep up with lessons and assignments. 292

Her parents encourage her collecting hobby but warn her not to visit isolated shops alone. Nanase follows that advice: after finding the remote Horizon Oddities Shop online, she waits until Chikage can accompany her before going there. 706

Appearance

Nanase is a petite girl of around 160 centimeters with a cute, refined appearance that combines an innocent air with the elegance of an affluent upbringing. 40

• Smooth, shoulder-length hair, with a lock on the left braided and tied by a pink ribbon. 40
• Large, bright violet or amethyst-like eyes. 191 466
• Fair cheeks and a naturally sweet smile. 18 40
• Often wears colorful prizes and accessories collected from school club games despite her otherwise elegant appearance. 40
• Wore a goose-yellow dress, off-white cardigan, Mary Jane shoes, and a rattan bag for her first outing alone with Chikage. 191
• For a later meeting with Chikage in Shibuya, wore a cream-colored Peter Pan-collar top, a pale green long skirt, and a khaki canvas bag. 741

Personality

Nanase is naturally friendly, sincere, and approachable. Unlike Yukimura Suzune's distant demeanor, she responds earnestly to anyone who speaks with her and quickly earns goodwill from classmates. 17

Her defining trait is curiosity. She enthusiastically pursues unusual stones, antiques, mysteries, games, and new experiences, often treating each as something worth examining rather than dismissing. 18 204 244

Although she can be innocent and somewhat airheaded, Nanase has sharp interpersonal intuition. She notices subtle changes in Suzune's mood and recognizes tension between Suzune and Chikage even when neither explains it. 67 167 241

Nanase is kindhearted and optimistic, readily encouraging her friends and preferring happy endings even when discussing supposedly paranormal stories. 246 661

Nanase becomes shy when her feelings for Chikage are involved. She avoids naming the person she likes, but later recognizes him as her first love. 518 577 618

Despite her enthusiasm for obscure shops, Nanase takes safety precautions. She avoids visiting a remote shop by herself and tells Chikage that going with him feels safer. 706

Abilities & Skills

Collecting and Bartering

Nanase has broad experience with collectibles, especially minerals, stones, antiques, and unusual trinkets.

• Collects objects based on personal interest rather than monetary value. 18
• Happily exchanges items with friends, including trading an Easter wood carving with Suzune and several stones with Chikage. 167
• Her personal collection contains multiple pieces of special equipment, earning her the description of a “Treasure Girl.” 167 479
• Her enthusiasm for sharing her collection helps Chikage acquire the Amber Bastion Stone through an ordinary stone exchange. 167
• Enjoys visiting curio shops with Chikage and helps him discover unusual items, prompting him to again call her his “Treasure Girl.” 662
• Finds the Horizon Oddities Shop online and visits it with Chikage, buying several stones. During the outing, Chikage discovers the Cyan-Wood Floral Staff among the shop's merchandise and again calls her his “Treasure Girl.” 706

Collection Club Leadership

Nanase is the driving organizer behind the Collection Club.

• Prepared the club's operational plan, activities, and goals before meeting faculty advisor Sakai Shion. 87
• Answered Sakai's questions clearly and methodically, helping secure the club's approval. 87
• Proposed researching the century-old cherry tree on campus as the club's first project. 87
• Secured approval for the club's budget application and coordinated plans for its use. 161

Research and Investigation

Nanase participates in the group's investigations into the Seven Mysteries of Private Moonlight Academy.

• Helped investigate the “Invisible Evil Spirit” incident at the swimming pool and used a camera to record Chikage's recreation of the phenomenon. 132
• Assists with gathering, reading, and organizing case materials for the club's mystery articles. 353 542
• Provided Chikage with a concise, organized overview of the abandoned stairwell case when its accumulated records proved extensive. 353
• Joined the group invited by the Student Council to investigate paranormal incidents at an inn in Osaka. 490 526
• Participated in investigating the old school building's blue-light mystery, initially hoping that its ghost story might have a happy ending before Chikage uncovered its true explanation. 661 662

Handicrafts and Art Guidance

Nanase can turn collected mineral materials into accessories and has enough drawing knowledge to teach basic technique.

• Designed the Moonlight Bracelet A using minerals from her collection and had a mineral-shop owner process the materials. 221
• Taught Chikage basic pencil control through direct hand-over-hand guidance and a “loose, steady, light” grip. 252
• Helped develop a manga project with Chikage, Suzune, and Aoi. 609
• Enthusiastically reviewed Chikage's manga storyboard and believed that its quality gave the project a genuine chance of acceptance. 608 609

Equipment / Weapons / Items

• Amber Bastion Stone — A special-equipment amber rough stone formerly in Nanase's collection. She exchanged it to Chikage, who registered it and gained its defensive ability. 167
• Moonlight Bracelet A — A blue-quality bracelet designed from Nanase's collected minerals; it grants its wearer Mood +1. 221
• Unidentified special equipment — Chikage discovers seven special pieces of equipment in Nanase's room during his visit to the Saionji residence. 479
• Camera — Used to record the recreation of the swimming-pool Seven Mystery. 132
• Stone collection — Includes numerous unusual stones, several of which are valuable enough to be exchanged through the Collection Club. 167
• Amethyst — A stone Nanase decides to buy while shopping with Chikage after he compares its color to her eyes. 706
• Planned bracelet gift — Nanase tells Chikage she intends to give him a bracelet; she puts it away for the time being after confessing her feelings. Its properties are not stated. 742
• Snow-on-the-mountain flower — A flower Chikage gives Nanase during their visit to the Horizon Oddities Shop, apparently making it appear inside her sealed shopping bag as a “magic trick.” 706

Relationships

• Natsume Chikage — Former middle-school classmate, Collection Club companion, and Nanase's first love. She frequently supports his projects, celebrates his victories, and becomes embarrassed around him; an accidental kiss later leaves both of them flustered. They subsequently agree to address each other by their given names, “Chikage” and “Nanase.” During an outing, his personalized flower gift makes her wonder whether he returns her feelings. She later confesses to him directly. Chikage takes her hand and asks for time to honor his promise to answer Tsukishima Rin first; Nanase agrees to wait. 16 167 577 611 630 639 706 742
• Yukimura Suzune — Nanase's best friend and fellow Collection Club member. Nanase is unusually perceptive about Suzune's changing moods, while Suzune sometimes becomes jealous of Nanase's closeness with Chikage. When Suzune invites Chikage to meet her novelist grandfather, Nanase recognizes that her friend may also be a strong romantic match for him, complicating Nanase's own feelings. 17 156 241 709 710
• Fujiwara Aoi — Close friend and Collection Club member. The two share enthusiasm for improving the clubroom and regularly celebrate Chikage's achievements together. They also share an uneasy awareness that Suzune's closeness with Chikage could conflict with their own feelings for him. 89 394 431 709
• Akita Sana — Fellow Collection Club member whom Nanase treats warmly and includes in the club's casual gatherings. Nanase, Aoi, and Sana become distressed when they consider the possibility that Suzune's outing with Chikage is a date. 543 662 709
• Saionji Koji — Her father, a prominent collector and auction-industry figure. He supports Chikage's effort to buy back his former home and can help connect him with trophy-related contacts. Along with Nanase's mother, he cautions her against visiting remote shops alone. 18 465 479 706
• Saionji Rikka — Her mother, who warmly receives the Natsume siblings and supports Nanase's feelings for Chikage. Along with Koji, she cautions Nanase against visiting remote shops alone. 478 479 706
• Natsume Ruri — Chikage's younger sister and Nanase's friend. Ruri initially considers Nanase the least threatening girl around Chikage because of Nanase's straightforward curiosity. She later alerts Nanase and the other girls to Chikage's planned outing with Suzune. 223 370 709
• Konoe Hitomi — Secretly follows and photographs Nanase's shopping trip with Chikage. Seeing him give Nanase a flower and compliment her makes Hitomi jealous; Nanase does not know she is being watched. 706

Story Role / Major Arcs

Formation of the Collection Club

Nanase brings Chikage, Suzune, and Aoi together around their shared interest in collecting. She leads the effort to establish the Collection Club, obtains Sakai Shion as its faculty advisor, and works toward meeting the club's one-month results requirement. 87

After the club receives its own room, Nanase immediately considers how to make it more functional and comfortable, suggesting equipment such as a refrigerator and heater. 89

Seven Mysteries Investigations

Nanase joins Chikage, Suzune, and Aoi in investigating the school's Seven Mysteries. She is initially excited by the supernatural premise but becomes frightened during the swimming-pool case, where she clings to Chikage for reassurance after witnessing the apparent ghostly shadow. 132 204

She continues assisting with research and documentation as the group investigates further cases, including the abandoned stairwell and the “Death Videotape.” 353 542

After the group investigates the old school building's blue-light mystery, Nanase accompanies Chikage to a curio shop, where her excitement over unusual antiques contributes to another important special-equipment discovery. 661 662

Stone Exchanges and the “Treasure Girl”

Nanase's passion for stones becomes central when she trades collectibles with Chikage. One of the exchanged stones proves to be the Amber Bastion Stone, revealing that her collection may contain far more than ordinary curiosities. 167

Chikage later visits the Saionji villa and finds seven pieces of special equipment in Nanase's room, confirming the extraordinary value hidden within her collection. 479

Her skill at leading Chikage toward intriguing shops and collectibles later prompts him to affectionately reaffirm her “Treasure Girl” nickname. 662

On another shopping trip, Nanase takes Chikage to the remote Horizon Oddities Shop, which she had previously been reluctant to visit alone. She buys stones while Chikage finds the Cyan-Wood Floral Staff. He calls her his “Treasure Girl” again, then uses the staff's hidden power to surprise her with a snow-on-the-mountain flower. Nanase is delighted by the apparent magic trick and blushes when he says the flower's meaning, curiosity, suits her. 706

Dragon Flag Championship Support

Nanase follows Chikage's lone run through the Dragon Flag Kendo Tournament alongside Suzune and Aoi. Though frightened by the prospect of him fighting entire teams alone and worried about his injured hand, she continues to cheer for him throughout his record-breaking victories. 411 413 431 443

After his championship victory, she joins the group video call from the Natsume apartment and personally congratulates him on his performance. 445

Manga Project

Nanase helps Suzune, Aoi, Chikage, Ruri, and Kaga Resaki develop a manga submission project. She contributes to the group's creative discussions and warmly endorses Chikage's completed storyboard, believing its story has real potential. 608 609

Growing Feelings for Chikage

Nanase's feelings emerge gradually through her handmade bracelet, her concern over Chikage's relationships with other girls, and her eagerness to spend time alone with him. 191 221 518

After accidentally kissing Chikage while retrieving her keys at his apartment, she later seeks him out to apologize. Their conversation makes clear that she believes it was likely his first kiss and deeply cares about how he feels. 611 630

Following the sports festival, Nanase happily asks Chikage whether they can call each other by their given names, deepening the intimacy of their relationship. 639

Chikage's flower gift and compliment during their oddities-shop outing lead Nanase to wonder whether his behavior expresses romantic feelings. Later, news that Suzune plans to take Chikage to meet her grandfather makes Nanase and the other girls confront the possibility that their close friend may also be romantically compatible with him. 706 709 710

Nanase eventually confesses her feelings to Chikage. He promises to accept the bracelet she intends to give him but explains that he cannot answer her confession until he has first answered Rin, as he previously promised. Nanase agrees to wait. They hold hands and walk home together, though their relationship remains unresolved. 742

Trivia

• Nanase's favorite hobby includes collecting strangely shaped stones, antiques, and novel trinkets. 18
• She ranked first on Moonlight Academy's entrance examinations and later tied Chikage for first place in the school. 36 473
• Her family has a private driver. 155 191
• In a board-game session, she excitedly declared that Chikage was her husband after her game piece landed on the same special space as his. 193
• She volunteered to be the first reader of Suzune's future work. 72