Michi to no Souguu

あらすじ

Honda finds a pair of panties one day as he's doing laundry in the company dorm. Turns out it's his kouhai, Shibuya. As Honda tries to calm Shibuya down, an awkward exchange about men's underwear ensues and thus begins a series of strange encounters between the two of them. (Source: Strawberry Time Scanlations)