My Sister Got a Boyfriend – Jealous Creampie at School

Synopsis

Kenji and Mayu are siblings attending the same school, secretly maintaining a physical relationship. While at school, Mayu acts coldly toward her brother—the typical tsundere type. One day, Kenji hears rumors that Mayu has gotten a boyfriend in her class. Unable to contain his jealousy, he drags her around school and continues to have intense creampie sex with her in various locations throughout the campus…

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