Hensuki: Are you willing to fall in love with a pervert, as long as she's a cutie?

Keiki Kiryu, an ordinary high school student who didn't have a girlfriend during his lifetime, suddenly receives a love letter, and a romantic comedy begins. The letter does not contain the sender's name, but the letter does contain white panties. In addition to finding the pervert peculiar, Keiki was desperate to have him participate in the perverted behavior of these several girls who surround him...