Some people have Angel fetish I guess?
For Me , since I have Ingrid
I skipped Charlotte , she wasn't really My core RF on Nutaku too. I use Horace more than Char
I have Sapphire Angel too , and I've been farming quite a lot on those 2 Silver unit / 3 Silver unit on 1 map
And have quite Silver fodder Thanks to Junon
Will have Plat Angel from Star Rush
Alreadyhave Eln at CC20 -1 , also Niel CC47
And just like You said , I probably will never use them
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Still only have Bernice at AW 25
Toss few TinCan to immediately AW her
Probably will CC Stella too , hopefully I can 3 Star the Seraphim map
Even if Bernice need 1/2 hour >.>