Im a big fan at netmarble but every collaborationi always have bad luck the rates sucks even boss syndrome character rates suck can't even get I know there's a free boss syndrome but I ain't have high cc You ass shit I can't even getting ruby suck even the coupon code time limit is fast I just re install this but reward so suck can you make banner high up other player can spend there money but I'm a student I don't even have 83k ruby it's so hard to grind ruby make it good rate and have chance.