OVA
Description
Ikuto Sonomura is Kanade Katagiri's non-blood-related younger brother, being the son of her mother's lover. With their parents absent, he manages the household, demonstrating exceptional skill in domestic tasks, especially cooking—a stark contrast to Kanade's lack of culinary ability. His hobbies include gardening. He stands 165 cm tall, has short blond hair, amber eyes, was born on August 3 (zodiac sign Leo), and has blood type AB.

Personality-wise, Ikuto exhibits a tsundere demeanor, frequently making sarcastic or sharp remarks toward Kanade while also displaying a protective and possessive streak. This manifests as intense jealousy toward other men interacting with her, leading him to monitor her activities and attempt to control her social interactions. Underlying this is a long-standing romantic love for Kanade, which he initially suppresses to avoid complicating their relationship. He encourages her to pursue other romantic interests and facilitates opportunities for her to date, hoping to move past his feelings. However, his efforts fail as Kanade consistently prefers spending time with him, deepening his internal conflict.

As his emotional restraint weakens, his actions become overt. After Kanade accidentally witnesses him masturbating while calling out to her ("aneki"), he confronts her directly about his masculinity and desires. His frustration escalates into nightly visits to her room, culminating in him kissing her while she sleeps and confessing his love, unaware she is awake. This act, combined with Kanade's realization that her dream "hero" figure was inspired by Ikuto's support during her hikikomori period, shifts their dynamic.

In their relationship's resolution, Kanade initiates a mutual confession, acknowledging reciprocal feelings. They engage in a consensual sexual relationship, with Ikuto using protection. Later depictions show them married and operating a restaurant together, growing ingredients in their garden. During the opening celebration, they perform symbolic gestures like sharing a tomato or kissing after a tape-cutting ceremony, indicating a stable partnership.

Alternative narrative paths depict darker outcomes involving non-consensual acts, confinement, and coercive behavior, highlighting the potential volatility of his possessiveness when unresolved. These paths remain distinct from his primary trajectory.