Boku no Kirai na Otouto

Shiina and Kazuya become siblings after their parents get married. Kazuya, who is five years older and a chef, takes care of Shiina, who refuses to eat food from anyone except Shiina himself. Three years later, Kazuya becomes increasingly withdrawn and jealous of his brother, eventually leading to a sexual assault. Shiina is confused by the sudden change in their relationship and unsure how to deal with it, as trying to run away proves ineffective. The brothers struggle to understand each other and find a way to reconnect.