Kokonotsu no Yuujou

A group of young boys form a close bond and create their own secret society, making a symbolic hand-cut as a sign of their friendship. As their relationship develops, tensions and conflicts arise, leading to emotional confrontations and shifting loyalties. One member, the younger brother, becomes a focal point of these struggles, as the group's unity is tested by personal disagreements and growing resentment. The story explores the complexities of childhood friendships and the challenges of maintaining trust and affection in the face of changing emotions and external pressures.