You're not truly experience DMM yet if you never witness all bronzes. 10+1 pull and pot not break even once. Trust me, it's heartbreaking on so many level.
For dupes, you're pretty new so dupes might be discouraging. But once you build decent teams, only way to effectively boost them up is getting dupes. Or you might want to use ampy on gold units, heck some people use ampy on 2* girl. But that's on Nutaku, and since we have super hard content like Kodaibana here. It's better to use on rainbow first, might spare on your super favorite, active gold too but that's your choice.
Talking about Kodaibana, my god stage 3 is just beyond me now.
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