Saik is an expressionless boy who can see ghosts. Yuki is a ghost girl who has always been alone and never had any friends. Saik dreams of becoming the perfect boy his mother wished for, while Yuki just wants to have friends. By helping each other, they’ll both achieve their own dreams.

On the other hand, Cristal is a kind girl who has no interest in love—until Saik saves her, sparking a romantic curiosity toward him and stirring jealousy in little Yuki. "W-wait… am I in love with Saik?" Unknowingly, Saik has managed to win the hearts of two girls (and a few others), though he remains completely oblivious.

With two goals in mind, Yuki will do whatever it takes to make them happen:
"You’ll fall in love with me, and I’ll make you smile, Saik!"