a gacha is a machine that is filled with goddies a designer has put in it will be a set so IE. a demon outfit , they will have a common or a couple of common items which might be a dress lets say and hooves , then horns may be an ultra rare item and makeup might be a rare item so the idea is to collect the whole series its usually somethign like 25l or 50l each pull and you get an item each pull , ooh idjk if i have explained this well buyt basically is what a gacha is ) its fun and many just gacha events so check them out not scary at all just a new and fun way to shop