“Hey, nice to meet ya~♪”
...She sounded dumb. That cute first impression was shattered instantly.
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.
And stuck with her is Kota—nit-picky, straight-laced, and constantly fed up.
They can't even last three seconds in the same room without trading insults—witness the birth of the worst brother-sister relationship ever!
... But maybe—just maybe—Kota's strict, responsible nature is exactly what Aika needs...?!
