Man, finally I cleared all items in the event shop. It took really long to do that. Honestly, it suck to lose to @Iczer9 , but it's expected since I don't roll for gacha CE at all.
I also "only" get 4 CE drops, so I can't MLB another "How To Walk on Stars" CE. A shame, but oh well, it can't be helped. Now I can focus on Class Score.