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

After cleaning the Calligraphy Club room one afternoon, Kiryuu Keiki found a love letter addressed to him on the club's desk. Eager at the possibility of finally getting a girlfriend, he opens the envelope only to find the words, "I like you" along with a pair of the sender's panties. With only these panties as evidence, Keiki narrows down the…