Around a long time... I started in 2017....and I still have very little (actually 2 at basic star level) to none of the sss tier characters, onlt 3 of the SS, and they exist in various aspects of the game. Spent over $300 in that time... You wont get past a certain ranking/level until you spend 1k $$. Fun, but ridiculously slow progress and server errors all day. Uninstalled.