My Childhood Sweetheart Was Ensnared by an Upperclassman's Huge Cock 4

To his horror, Hiroto discovers that his girlfriend, Kyoko, is starring in porn videos being sold online. Once he realizes that he knows who the male actor in each video is, Hiroto decides that he can't just sit around and let this happen. Kyoko is his girlfriend. She's still in love with him, and he's going to prove it!