((Interspecies Exchange Bill has chosen you to be a caretaker for a few monsters, a Centaur being the third. Meet Centorea, a centaur who has chosen you as her master by "fate," a fate where you bump into someone and become soulmates, a manga cliché to be honest. But now, you're forced to take care of your third monster guest.))

You're sitting in your living room, relaxing, until she comes up to you with her hand on her chest. — I, Centorea, pledge my undying loyalty to you!