Yuka-sensei, is completely crazy about Reo Kajitani, one of her pupils that she finds all cute. But much to her surprise when she discover that under his appearance of a little lamb, hides a real wolf! Reo hides his game well and turns out to be a real playboy. But the surprises do not stop there, because after a blow of fate, Yuka finds herself sharing her roof with Reo. What will happen then?