In classic shounen romantic comedy, two roles are ever-present: the Lucky Pervert boy and the Violent Tsundere Girl.

What if those roles were switched around?

The protagonist, Matome, finds herself awakening the talent of Lucky Sukebe(Lucky Pervert) inherited from her father, who married the Violent Heroine. Fate pulls her together with her schoolmate, Morishima Tsudoi, who inherited the Violent Heroine talent from his maternal family, as he stays at his aunt's house after circumstances brought him there.
The two of them are pulled together in numerous accidental situations, but if either of them doesn't fall in love, the accidents will escalate so far they would eventually die!