More precisely, it's Lecher, which in this context of Lucky Sukebe is "a lucky act of lechery". Most notable example is Tamaki from Fire Force. You know the trope of character ending up in embarrassing situations that has sexual connotations, like flashing panties? It's basically that.
You know, it's funny, since Yiyoung has the power to eliminate them all. But now she has to "fight" constrained by the system, which makes it all the more interesting.