TV-Series
Description
Kotomi Ichinose is a highly intelligent individual marked by profound social withdrawal. She struggles significantly with interpersonal interactions, frequently seeking solitude in the school library where she reads advanced academic material at an exceptional pace. Her library habits include routinely removing her shoes and socks and occasionally cutting book pages with scissors. Communication with her necessitates using "Kotomi-chan," as she often ignores attempts otherwise.

Her childhood trauma stems from her parents' deaths in a plane crash. Prior to their passing, Kotomi angrily told them "I hate you," leading to intense guilt and self-blame where she believed her selfishness caused their deaths. Resolving to "be a good girl," she channeled this into academic dedication. In her distress, she destroyed documents she mistakenly thought were vital to her parents' research, deepening her remorse. This trauma resulted in isolation and a fear of forming connections to avoid future loss.

Physically, Kotomi has indigo hair styled in two small horsetails secured by pink beads, covering her ears, with a parted fringe. She stands approximately 160 cm tall (5'3") and weighs 48 kg (106 lbs), with measurements of 88-58-85 cm (bust-waist-hips). Her bust portrayal varies between media, appearing larger in anime adaptations compared to a flatter chest in the original visual novel.

Character development occurs through renewed friendship with childhood friend Tomoya Okazaki, whom she initially didn't recognize. With his support, she gradually attempts social integration, joining the drama club and interacting with peers like Nagisa Furukawa and Ryou Fujibayashi, though she frequently questions if they are "bullies." A pivotal moment arises when she mistakes Ryou's bus accident for a fatal event, triggering a traumatic relapse. Tomoya's intervention helps her confront her past, including restoring her neglected garden. Resolution comes when her guardian delivers a final gift from her parents—a teddy bear and a letter encouraging her to live freely. This allows Kotomi to accept their enduring love, leading to emotional healing and increased maturity.

Her intellectual pursuits remain central, focusing on advanced studies including her parents' research into parallel worlds. This interest later connects to broader narrative elements involving alternate realities. She relocates abroad for academic purposes but maintains contact with friends, visiting during significant events like Nagisa's pregnancy.

Distinctive traits include her notably poor violin playing, stemming from a decade-long hiatus that degraded her skill while preserving muscle memory, creating a comedic disconnect between her perception and the actual sound. She frequently uses the phrases "nano" or "no" to end sentences and quotes literature, such as "Day before yesterday I saw a rabbit, and yesterday a deer, and today, you" from Robert F. Young's *The Dandelion Girl*—a reference originally shared with Tomoya in childhood.

In the crossover series Kaginado, she appears alongside characters from various Key franchises. Her portrayal remains consistent with her established characterization from the original series.