My seniors have known my erotic knowledge, which has the nickname of Dr. AV. Yume-senpai doesn't want her new boyfriend to think she's bad at sex, so she wants to practice sex. "I'm going to experiment with you, so tell me if you feel good!" "You, how many times do you blow the tide?" "It feels better to lick it with a sound !?" !! ”I can't catch up with my seniors who are getting better and more erotic ...