"Psychic Friendship"

Ryrori Aeri is a new student at Tokyo High. She's smart, but not sociable. She's never had many close friends, but all that is about to change. She meets Ryukeiaka Kalihari, a boy that is anything but normal. They become close, and he reveals a secret to her, one he doesn't know has existed in his family's generations since before he was born. It will change them and the world they live in. For Ryukeiaka, it's a journey to discover that he has a sibling he's never met, one who's DNA matches his down to the last chromosome. Will his secret be his undoing? Can he change his destiny and live a normal life? Or is he meant for something more?