So... I can only free up character slots by evolving them? I'm not a really active player so now I got 400 character slot all occupied but just several bronzes in their 20s(kept a lv.30 Cerebella for the 1 bronze vs 2 gold fight) and I got some relics stacking up but cannot open them. So I can only level up my character, so that they can evolve and consume others, then free up the space... is this the only way that works? Thanks guys in advance.