An Ordinary kid Shinta likes to play with cats even though he cannot have one for a pet because of his father's allergies. Cats also like to play with Shinta... in more ways than one. For example, changing into a girl and becoming Shinta's girlfriend and generally trying to get him to reciprocate their catcalls, literally.

Chitose is an energetic yet slightly precocious elementary schooler. Chitose has the biggest crush on a guy she like to call “Onii-chan” who works at a town hall next to Chitose’s school. Poor Onii-chan gets hassled endlessly by Chitose. Will Onii-chan ever get a day of peace?!?!
(Source: Jmanga)

Furoku is a Shinigami who fell in love with a girl, Himeka, while waiting 6 months for an old man to die in the hospital. The problem is, she is supposed to die in heart surgery, and not only that, she's meant to go to hell. The reason being, she was born with a weak body, but dreams of taking over the world if she had a stronger body. So, Furoku offers some of his life up to save this "girl who hasn't done anything wrong". What future lies ahead of Fukuro and this "Bloody Queen"?