I Was Made To Dress Up As A Woman, And My Best Friend Told Me I Was A Man's Daughter. Ririka Kito

Riku was worried about being forced to cross-dress for the school festival. Seeing this, his best friend Koume tried to cheer him up. Then one day, seeing Riku in drag, Koume's suppressed emotions exploded, and she ended up taking Riku's penis into her mouth.