That is Surely Because of Love!?

Unlucky Taira accidentally dives face-first between the legs of judo club captain Kusehara. Instead of anger, Kusehara insists that Taira 'take responsibility' and begins to enact various perverted acts on him every day, turning Taira's daily life into a series of embarrassing and unwanted encounters.

In a separate story, childhood friends Ibuki and Kazoumi live together after Kazoumi's parents leave the country for business. Kazoumi takes care of the spoiled and unaware Ibuki, but he secretly wants more than just friendship. As their daily routines intertwine, hidden feelings begin to surface.