HUNTB-299 Let me drink your sperm, big brother! My little sister who knows nothing about sex saw me masturbating! I thought it was bad when she asked, "How do you make it come out? Do it again!" and seemed so interested!?

My stepsister, who knows nothing about sex, saw me masturbating! I thought it was bad, but then she eagerly asked, 'Why does it come out? Do it again!' Then she suddenly started jerking me off with her hand. Seeing that I was getting carried away, I said that I could cum even if she used her mouth, so she started sucking me with her small mouth! It felt so good that I ended up cumming in my stepsister's mouth. 'It really came out!' she happily exclaimed. Then she swallowed the semen and asked for more, 'Give me more!'