Jyunpei Kousaka, who has an allergic reaction to cats, lives in a society that worships and adores them. He finds himself spellbound to a curse that allows him to communicate with the neighboring felines, whether he likes it or not.

Dealing with demanding cats is tough enough for Jyunpei, but having to keep the curse a secret is making life crappier than a litter box. Add in his huge crush on classmate Mizuno, his next cat task putting him in the direct fire of ex-childhood friend Sumiyoshi and, well, you get the picture…

After meeting cute, directionally-challenged college student Mochizuki Chizuru, Jyunpei gets pulled into helping her navigate the streets of her mail delivery route. Of course, all the cats in the neighborhood have their own requests and Mochizuki seems to keep giving all of Jyunpei's friends the wrong ideas.

It seems that there is someone else at school with eyes for Mizuno - Captain of the track and field team - Ichinose Nagi. As if the letter of challenge wasn't enough, it turns out that Nagi's father is a true Yakuza boss. Yet, when Jyunpei, Mizuno and Sumiyoshi find themselves in the dragon's den, things may not be exactly how they appear!

Nagi has a new challenge for Jyunpei. Mizuno and Sumiyoshi accompany them to the amusement park where Jyunpei is told to either confess his feelings and start dating Mizuno that day or find himself instantly betrothed and the future son-in-law of a Yakuza!

Disaster seems to be following Jyunpei like a black cat when a mysterious girl from his school knows that he's been cursed. Even worse, a new girl hanging around has Mizuno, Sumiyoshi and Nagi acting even more off balance!