IENFH-016 A high school girl who pitied my pathetic self promised to let me do 'so-ko' (frottage) with her, but we both got too into it and her pussy was soaked! So I slipped it in! "Eh? It's inside?" But I couldn't stop and ended up cumming inside her! C

An older brother is giving his younger sister a massage. Taking advantage of her falling asleep from pleasure, he does whatever he wants! Getting more and more excited, he gropes her breasts and rubs his dick all over. His sister wakes up and is horrified. However, she can't bring herself to hate him, so she helps him ejaculate while he's depressed. His demands escalate again! Eventually, he proposes rubbing his dick on her pussy and ejaculating, but accidentally slips it in...!