From Renta!:
"Can I take... your first time now?" Her older brother is a wolf in disguise...! Yuno admired an older guy at school and tried to give him the first cookies she ever made. However, due to a series of misfortunes (?), she somehow made a mistake and ended up saying "Please take my first time!" to Shu, a classmate she hates. On top of this misunderstanding, he accepted her as his girlfriend!! "How can I explain myself...?" In addition to troubling over that, Yuno and Shu become siblings after her mom gets re-married! Moreover, Shu shows even more interest, saying, "This is what people call 'forbidden love', right?" Somebody say this is a joke!!

Official English Translation: Renta!, Coolmic, Pocket Comics