Kawaikereba Hentai demo Suki ni Natte Kuremasu ka?

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...