Iede Jiraikei Kouhai-tachi to Sex Suru Dake no Natsuyasumi The Motion Anime

One day, junior student Selina runs away from home and asks the main character to spend the night...

Serina came was ready to have sex with him, so as not to return home, and, apparently, she had a lot of experience in this. After a few lewd days, Selina's friend Luna came to the hero's house.

He thought she was experienced too, but it turns out that she's actually a virgin. She watches with great curiosity as the hero fucks Selina, and then starts begging for him to fuck her too...