Shishunki Danshi Junjoukei

Two months ago, a devastating accident upended the life of a high school boy and his family. His older brother survived the incident, but the physical recovery came at a profound psychological cost. When he finally woke, it became clear that the trauma had completely fractured his memory, erasing every experience and relationship formed after early childhood. Now, the older brother’s mind has regressed entirely to that of a six-year-old child. He retains no recollection of his adolescence, his personal growth, or the bond he once shared with his younger sibling. For the high school boy, this sudden reversal transforms a familiar family dynamic into an uncharted emotional landscape. He is forced to navigate daily life alongside someone who wears his brother's face but possesses the innocence and confusion of a young child. This heartbreaking premise places the younger brother in an unexpected caretaker role, challenging him to bridge the vast gap between the sibling he knew and the person standing before him now. As they attempt to rebuild their connection from the ground up, the story explores themes of loss, familial devotion, and the fragile nature of identity when memory itself is stripped away.