Because of a magic trick performed by Triboulet, the “Carnival King”, a NSFW artist and fujoshi, Nina, finds herself swapping bodies with Yao, the nephew of a yakuza boss. While Nina immediately uses Yao’s body to give the craziest orders to his subordinates, Yao uses Nina’s identity to fully dedicate himself to his obsession with cats, a soft spot he's been hiding for his entire gangster life.