Kupid's mischief (1-7 volumes)

Publisher: Shogakukan
Author: Taku Kitazaki
Size: 128mm x 182mm
Number of books: 7
Language: Japanese
Category: Youth manga, manga
Latest publication date: 2006-06-05

Synopsis:
When he was a junior high school student, he dreamed of marriage with a virgin and a virgin, and was a virgin even at the age of 21, despite being no longer a dream. Mutsuki, who made an appointment of a date with Reiko Okura, a clerk who served as a clerk, was seen by former classmate Asami Kiryu, a former classmate, and ejaculated a purple ball. This was the symptoms of "Loss System with Acemisive Ejaculation" (commonly known as the rainbow ball), which means that Mutsuki can only ejaculate six times.