Ore no Pantsu ga Hitojichi ni Torareteimasu

"Are you going commando?" Due to unforeseen circumstances, Ryo Kishimoto winds up freeballing it on the way to school one day... and against all odds, his younger teammate Haruma Nojima winds up with some major blackmail material. From that day on, Ryo is forced to live without underpants. He even has to wear a bra along with other less savory accessories... Haruma keeps ramping up the naughtiness, and despite his earlier reluctance, Ryo starts to enjoy it...! What fate lies in store for Ryo and his underwear? This is a freeballing love story about two high-school students!

(Source: Renta!)