Nyan Koi!

Junpei Kousaka's most important matters were to stay away from cats, due to his allergy to them, and his crush on his classmate Kaede Mizuno, until he accidentally damages the statue of a cat deity and is cursed with the ability to talk to cats and the task of attending 100 requests from them, with the risk of be transformed into a cat himself if he fails. The first quest he receives is to help the stray cats in the local park who have been tormented by a stranger leaving them traumatized. The tormentor later turns out to be Kaede who has an extreme fondness for cats to the point of smothering them.

Junpei must help a cat to give his thanks to a girl who helped him, however she is no other than Kanako Sumiyoshi, a childhood acquaintance of his who is determined to torment him during the school's cultural festival. The cat later moves in with Kunpei until he can find another home.

Junpei meets Chizuru Mochizuki, a postwoman in trouble and decides to help her while roaming the city helping the cats with their requests. However, hanging around with her ends up putting him on a series of misunderstandings much to his despair.

Junpei's next request is from a cat owned by Nagi Ichinose, an upperclassman of him. While Nagi seems to be a threat to his relationship with Kaede at first, he ends up being surprised when he figures out Nagi's true nature.

Junpei sets for the amusement park with Kaede, which could be the perfect chance to get closer to her if Kanako and Nagi had not come along for the ride.

Junpei meet the twins Akari and Kotone Kirishima, who know about his curse and decided to help on his ordeal. However, hanging with them becomes another source of misunderstandings, mostly due to Kotone's strange infatuation on him and their ability to sense the supernatural like Junpei's curse.