TV-Series
Description
Sakura Adachi is a high school student habitually found skipping class, frequently retreating to isolated spots like the gymnasium's second floor. Her appearance features shoulder-length hair—depicted as light brown in the light novel and greyish-black in the manga—paired with light grey or bluish eyes. She stands taller than her classmate, Hougetsu Shimamura, who later becomes central to her life. Adachi holds a part-time job at a Chinese restaurant, initially wearing a traditional dress at her manager's insistence; she eventually buys one herself solely because Shimamura enjoys seeing her in it. Flash-forwards reveal an older Adachi with longer hair and a more mature demeanor.

Extreme introversion and social difficulty define Adachi's personality. Before meeting Shimamura, she possessed no friends and was perceived as cold and aloof by classmates, resulting in isolation. Significant developmental delays marked her childhood, including late acquisition of basic language skills, which hindered communication with her mother. Attempts by her mother to connect through outings like parks or zoos failed due to Adachi's inability to express feelings or desires, fostering a distant home life where emotional needs remained unmet and reinforcing her withdrawal. Adachi also exhibits intense jealousy, particularly when Shimamura interacts with others, often fleeing confrontations. Despite these struggles, she demonstrates fierce loyalty and seriousness about commitments once made.

Her bond with Shimamura sparks when both skip class. This encounter forges Adachi's first meaningful friendship, gradually deepening into romantic feelings she initially fails to comprehend or articulate. Vivid dreams about Shimamura lead to the realization of her attraction, though she denies romantic inclinations until later. Jealousy peaks upon seeing Shimamura with her childhood friend, Tarumi, triggering an emotionally overwhelming phone confession that lays bare Adachi's insecurities and fear of abandonment, rooted in her lack of prior relationships. She eventually confesses her feelings during a summer festival in their second year, becoming Shimamura's girlfriend.

Adachi's development centers on managing jealousy and improving communication. Once in the relationship, she consciously strives to be more considerate, such as texting before calling to respect Shimamura's space. Despite progress, she remains prone to overplanning dates and struggles with direct affection, often resorting to indirect methods like hinting about chocolate exchanges for Valentine's Day. Flash-forward sequences depict her calmer and slightly more socially integrated after ten years, though core traits like introspection and self-criticism persist. She reflects on her past self-imposed isolation, acknowledging it as a barrier overcome primarily through her bond with Shimamura.

Trivia notes include her left-handedness, December 30th birthdate (Capricorn), and a misapplied "delinquent" reputation stemming from frequent class-skipping—a manifestation of social anxiety, not rebellion.