I Can't Believe You're Hard! The Fierce Gay Man and the Virgin With Low Self-Esteem

Story :  "Oh, wow. You're soaking wet. You're such a slut." That's because you're sucking and rubbing my breasts... D-Don't...! Yuki Tanabe has absolutely zero experience with men, and the first guy she fell in love with was Ko Kashiwagi, her superior at work. One day, she happens to see Ko having a lover's quarrel. On top of that... his partner is a man!? No way, Ko was gay!? Nevertheless, Yuki can't give up on her feelings for him. So, under certain conditions, she dives into a totally sexy "love" affair with him...!?