Manga by author Harada Shigemitsu - Status completed

From Baka-Updates Manga:Yuria is a humanoid dutch wife (love doll). A female android designed with the sole purpose of being the sex slave of her master. But she has one flaw. She doesn't want to be a dutch wife. After escaping from her creator, she meets Kubo Shunsuke, who gives her a place to stay. Hilarity is bound to ensue as she battles her programming, which draws her towards him, and pretty much any other man she comes across.

Rinosuke's useless and vagrant father is now dead. Now, at the age of 16, he is completely alone and will have to quit school to make ends meet. On the night his father dies, a naked woman with large breasts falls from the sky and lands on top of him. She introduces herself as Sakamoto Marina, the future wife of the future Rinosuke. She states that she used a time machine to come back to the past, and start a new life with the younger Rinosuke. Rinosuke's new life with his future(?) wife begins.

The fate of the world rests on one man's shoulders. Or, to put it more exactly, it rests on his balls.In a freak sealing accident the Queen of Terror is sealed into Satou Kohta's balls, thus preventing her from reigning destruction on the world. However, a lesser devil, Elyse, has been sent up to Earth to release the Queen at all costs. The only way to do so is to make Kohta ejaculate, and Elyse only has 30 days to do it.The battle for mankind has begun, in Kohta's pants.