Shiina Hiyori

Biodata

Feature	Information
Name	Shiina Hiyori (椎名日和)
Gender	Female
Affiliation	First-year Class C student 21 310
Occupation/Role	Student; mystery-novel enthusiast
Status	Active
First Appearance	Chapter 20 — “First Encounter (Shiina Hiyori)” 20

Background

Shiina developed her love of reading through her father, an obscure writer known as Kikumei. Though his books have never sold well, she treasures his work; she bought three copies of one of his novels, keeps one in her dorm, and later gives one to Natsu. Her interest eventually shifted toward mystery fiction. 139

At the start of the school year, Shiina had few friends and spent most of her free time alone in the library. She found it difficult to socialize, and no one in Class C shared her enthusiasm for mystery novels. 21 263

Although generally uninvolved in Class C’s social circles, Shiina helps with tasks within her ability, including organizing study sessions and assisting weaker classmates before exams. She states that her grades are likely the best in Class C, and was selected to transfer to Class B alongside Kaneda Satoru during the exchange challenge. 84 263

Appearance

Shiina is a quiet, literary-looking girl with a soft and soothing presence. Her usual school-uniform appearance reinforces the refined image she presents in the library. 20 21

• Long silver-white hair that falls to her waist. 20
• Clear violet eyes. 20 130
• Fair skin and a small, delicate face. 20
• Often carries or holds a book; she is rarely seen without reading material. 130 263
• Wore a light-blue dress and wide-brimmed sun hat during the cruise-ship trip. 289
• Chose a light-blue chiffon dress, side braid, and pearl hairpin for her first official date with Natsu. 290

Personality

Shiina is gentle, polite, and considerate. She takes genuine joy in sharing books, carefully considers whether her recommendations will suit others, and avoids burdening Natsu when she believes he may be busy. 21 45

Her reserved nature makes her slow to form connections, but she is sincere once she does. Meeting Natsu gives her a rare book-loving companion, and she becomes visibly happy when he returns to the library or honors their Wednesday reading arrangement. 21 44 84

Despite her quiet exterior, Shiina is observant and emotionally sensitive. She recognizes the implications of Kamuro Masumi’s familiarity with Natsu, struggles with jealousy after learning of his relationships, and initially tries to withdraw rather than interfere. Ultimately, she chooses not to abandon her own feelings. 141 264 265

Shiina can also be unexpectedly composed. She is not frightened by Natsu’s attempted horror story, instead finding the fraudulent phone-bill punchline amusing. 45

Abilities & Skills

Literary Knowledge and Analysis

Shiina is highly knowledgeable about mystery and suspense fiction, particularly Western hard-boiled works. She regularly recommends novels and enjoys detailed discussion of their prose, perspective, and plot construction. 21 138

• Recommended Cornell Woolrich’s Rear Window to Natsu during their first meeting. 21
• Recommended Raymond Chandler’s Farewell, My Lovely, describing its detective protagonist Marlowe as especially compelling. 138
• Recognizes fine details in texts, though Natsu’s ability to recall every detail still impresses her. 84
• Her taste contrasts with her gentle appearance: she favors mystery, suspense, and hard-boiled fiction. 138

Academic Ability

Shiina is one of Class C’s strongest students and is capable of helping classmates study. 84 263

• Believes her grades are probably the best in Class C. 84
• Was chosen to transfer to Class B during the exchange challenge. 84
• Helps organize study sessions and supports classmates with weaker academic performance. 263

Cooking

Shiina learns cooking from Natsu and gradually gains confidence in preparing meals herself. 140 192

• Practiced making cream stew repeatedly before inviting Natsu to taste it. 192 193
• Asks Natsu to teach her cooking after praising his food. 140
• Later prepares cream stew for him as his girlfriend and seeks his assessment of her improvement. 270

Improved Physical Condition

After becoming one of Natsu’s official girlfriends, Shiina notices a substantial improvement in her stamina despite not training deliberately. 289

• Previously tired easily after walking moderate distances. 289
• States that she could now run several kilometers without becoming especially tired. 289

Items

• Kikumei’s novel — A cherished book written by her father; Shiina owns multiple copies and gives one to Natsu. 139
• Exquisite Bookmark — A handmade set from Natsu, including bookmarks based on characters from her father’s work and a chibi illustration of Shiina reading beneath a tree. The bookmark subtly improves Shiina’s thinking ability while she carries it. 192
• Bookshelf collection — Her dorm room contains densely packed books, with mystery novels and other reading material forming its defining feature. 192 193

Relationships

• Shikime Natsu — Began as her first book-loving friend after he helped her retrieve a book in the library. They established regular Wednesday reading sessions, grew closer through book discussions and meals, and began using given names. Shiina becomes Natsu’s third official girlfriend after accepting his confession. 20 21 45 140 269 272
• Kamuro Masumi — Initially an unfamiliar and intimidating presence to Shiina because of her close relationship with Natsu. Shiina feels jealous of her, but Kamuro accepts Shiina as Natsu’s girlfriend and asks that they get along. 141 264 272
• Sakura Airi — Natsu’s second girlfriend. Shiina meets Airi after making her relationship with Natsu official; the two exchange polite greetings and become part of the same relationship group. 272 289
• Ryuen Kakeru — A Class C classmate who holds absolute authority despite the class having no formal representative. Shiina does not appear afraid of him, though she dislikes violence. 21 142
• Kikumei — Her father and the writer who introduced her to reading. Shiina deeply values his little-known novels. 139
• Shiraishi Asuka — Meets Shiina on the uninhabited island through Natsu. Their first interaction is polite, and they later converse about the island’s scenery and plants. 310 311

Story Role / Major Arcs

Library Encounter and Book Friendship

Natsu first encounters Shiina in the library while she is unable to reach a book on a high shelf. After he helps her, she introduces herself, notices his interest in mystery novels, and recommends Rear Window. Their shared reading and discussion lead to dinner, an exchange of contact information, and the start of their friendship. 20 21 22

Wednesday Reading Routine

Shiina and Natsu agree to meet in the library every Wednesday. The arrangement becomes a meaningful private routine for Shiina, who looks forward to his visits and is disappointed when he is absent. 45 84 130

Closer Friendship

Their relationship develops through book recommendations, cooking lessons, and personal gifts. Shiina gives Natsu her father’s novel, while Natsu makes her personalized bookmarks after carefully reading it. They later begin addressing each other as “Hiyori” and “Natsu.” 139 140 192 195

Discovery of Natsu’s Relationships

Shiina learns that Natsu is dating Kamuro Masumi and initially avoids him to avoid causing trouble. She nevertheless attends their Wednesday library meeting, resolves not to give up her feelings, and later learns that Sakura Airi is also Natsu’s girlfriend. 264 265 268

Becoming Natsu’s Third Girlfriend

After Natsu openly explains his existing relationships, he tells Shiina that she is a girl he likes very much and asks her to become his girlfriend. Shiina accepts, then meets Kamuro and Airi as Natsu introduces the three girls to one another. 269 272

First Date and Uninhabited Island

Shiina’s first official date with Natsu includes traveling by bus to an aquarium, holding hands, and sharing an intimate moment beneath the aquarium lights. She later joins Natsu, Kamuro, and Airi during the uninhabited-island special exam, where she helps gather resources and admires Natsu’s cabin-building work. 290 291 310 312

Notable Quotes

“Shikime will definitely win.” 140

“It’s January 21st.” 195