Originally Posted by
maotd
My inventory size is also 125 units. Currently at 116/125 with 13 ampies/dragons in (and tons of them in my gift box...). Actually it's not that hard to manage. I just need 1 free place for rolling gacha and go through stages. Hopefully, you can have more units than the max without units auto-delete or anything (hopefully, that's the same for the gift box).
So, you just need to use manyu as soon as you get them and keep the event ones in the gift box. Same for dragons. And if you really need space... look at thoses weak and common littles 2* and 3*. It's so easy to get them. You can just sell one or two to get precious space.