Description:

After Kota’s father remarried, the girl who became his stepsister turned out to be a super-bratty, trend-obsessed gyaru…?! Whenever our parents are away, Kota’s life is flipped upside down by Aika’s free-spirited chaos. Aika plays the “perfect daughter” in front of their parents, but when left on her own, she’s a full-blown teenage disaster.