An idol-level beautiful girl transforms into a lewd and vulgar little sister! Hana-chan, who has become overly sensitive and prone to premature ejaculation on her ovulation day, can't stop her filthy love for her brother and starts masturbating obscenely! She seduces her brother and ends up with live creampie! She repeatedly utters dirty words, relentlessly teasing! Her cute pajama-clad state of constant orgasms is a must-see! A steamy love story!
