Jin and Sukuna Itadori, the inseparable twins who had been together since forever, eagerly anticipated the arrival of their little sister. In the delivery room, their mother lay, exerting her strength to bring another sibling into the world.

Sitting in the waiting room, their father, Wasuke, couldn't help but reflect on the passing of time. The seven-year-old twins possessed distinct personalities. Jin was known for his kindness towards children, always radiating joy and popularity among his peers. On the other hand, Sukuna seemed perpetually bored or cold, yet he exhibited a vibrant spirit that couldn't be ignored.

After several long hours, the father was guided into the room where his wife, their mother, lay. Exhausted and in need of rest, she had endured a challenging journey in bringing their new family member into the world.