I'm a virgin, but after failing to have sex with my girlfriend, I'm scared of having sex and refuse to go to school! A goddess has descended upon me and says she'll let me have sex with her! She's my sister, but... But if it means I can get rid of my virginity, then I don't mind if it's my sister! But before I knew it, I'd cum inside her three times in a row without pulling out! Even though I'd made such a mistake, she'd forgive me with a kind smile, so I kept cumming inside her over and over again! I'm bad at sex, but even my sister can't help but cum after so many hits!