Yui Matsumoto is beautiful, talented, and seemingly sweet, but beneath her calm exterior lies an obsessive love for one person: Yuto Takahashi. She watches him closely, protects him in ways no one else notices, and becomes dangerously jealous of anyone who gets too close. Yuto, on the other ha...

Every century, a town is forced to offer sacrifices to a "Supernatural Choir" that sings away disasters. Those chosen to sing vanish from existence, as if they never lived. When the protagonist's younger sibling is selected, they volunteer to take their place - but inside the choir, they discover...