Kazuki just inherited a large sum of money, the only problem is there may be a hitman out for his life.

Shinjirou's brother is a brilliant scientist whose chosen career is making weird cell phones. Shinjirou has received a gift of his brother's latest product, the Doll-Phone, which is a walking, talking, tiny girl who doubles as a cell phone. But he can't help feeling that a phone like that seems kind of perverted to use...

It's Toilet Girl Hanako. Yes, she's a walking, talking toilet.

(Source: MU)