I, a virgin, failed to have sex with my girlfriend and was afraid to have sex with her, so I refused to go to school! - A goddess has arrived who will let me have sex with her! - She's my sister though... - But if I can lose my virginity, I don't mind being an older sister! - But before I knew it, I cum inside my sister three times in a row without pulling out! - Even if I make a mistake like this, my sister forgives me with a kind smile, and I cum again and again! - I'm not good at sex, but even my older sister was able to cum a few times!