Tenshi no Inai 12-gatsu

In Tenshi no Inai 12-gatsu, a high school student navigates unfulfilling social relationships and an aversion to commitment, partly due to his overbearing younger sister. However, his life takes an unexpected turn after a chance encounter with Kurihara Touko, a classmate who is eager to connect with others. As he distances himself from the relationship, Touko becomes increasingly attached, sparking a poignant and introspective exploration of their bond and the complexities of human connections.