Nラブ ―ネ取りネ取られ生きるのさ―

"When you steal a girl, your beloved one is also stolen by other man."

In a certain academy, guys try to corrupt lover, little sister, classmate,
junior student and female teacher with their overflowing sexual desire.
Will you defend your beloved one?.... Or like other guys do... Mate with other girls!?

[From DLsite English]