The Gal Who Was Meant to Confess to Me as a Game Punishment Has Apparently Fallen in Love with Me

Barato Nanami, a toned-down version of the gal at the top of the school pecking order, lost a game of cards and now has to confess to a guy in her class as a punishment. Misumai Youshin, who is a loner with no friends was the chosen guy but he knows about the punishment! It should have been a game punishment, but will Nanami grow feelings for Youshin...?