Description:

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. (Source: MU) Note: There are five specials: Extra Ball 1-3 and Special Ball 1 & 2 coupled with the tankoubon releases.

Description:

Makino Yayoi is a 16 year old high school girl. She made a promise with her mother that she wouldn't have sex until she turned 20 years old! However she believes that promise to be in danger! She mistakenly thinks that her classmate, Suzuki, is "gunning for her chastity!" Now she must use every supreme technique she can as she defends her virginity with her life. (Source: Solaris-SVU)

Description:

Saku had a normal life, living with his cousin Kuran and being tormented daily by his childhood friend, Karin. That is, until the day a girl named Kiiro showed up out of nowhere claiming to be Karin's and Saku's daughter from the future. Convinced she will disappear from existence unless Saku and Karin get married, she makes life a lot more complicated for everyone. Things only get crazier when Hiiro, a girl claiming to be Kuran's and Saku's daughter from a different timeline in the future, appears with the goal of getting Saku together with his cousin Kuran. Saku is suddenly faced with a dilemma: whom does he choose as his wife, and which daughter does he save from disappearing into nothing? (Source: MangaHelpers)

Description:

1-3. Ore x Yome 4-6. Gyakushu no Ore x Yome

Description:

Karigari Hiroshi is a total robotics geek/genius who really likes this one girl, Marie. He's too shy to ask her out, so he becomes obsessed with creating a perfect android copy of Marie. He succeeds perfectly in creating Marie, an android with the intelligence and heart/emotions of a human and who looks just like Mari (though with different colored hair). Of course, Karigari never really considered the implications of such a thing... (Source: MangaProject)