In theory, yes, but... uuh, that's not realististic at all.
For example, getting Belial might take you a thousand rerolls. So, you want to get _A_ Fire SSR with Belial? That will probably take you like a hundred Belials before you get that. So, is one hundred thousand rerolls worth your time...?
When building a fire team should I use R fire kamihimes. For example I have Belial, 2 SR fire kamihimes and 2 R fire kamihimes. Should I use R kamihimes or use 2 SR or SSR kamihimes with different element?
Belial alone will give your Fire stuff double damage, so it's rather difficult for non-Fire Hime to compare. I guess only if they can bring a debuff that you can't bring with your Fire team.
So as long as I use a soul which can inflicit debuffs I should use fire himes whether they are R, SR or SSR.
>starting with fire team at this point
Rest in Pepperonis. Cuz you better be whaling to get better stuffs for your fire team
Otherwise, keep rerolling.
BTW, 100% eido is not the best deal when you don't have good girls for your team. 100% eido is just a bonus.
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The same argument can be made for every element at this stage. At least Fire is getting three events in a fairly short time.100% Eidolon gets you better friends, which gets you really far. One core Hime won't get you as far as one P2W Eidolon either.
If you have Belial, you want to avoid using off-element hime as possible. You may take 1 off-element great support hime (like Sol/at least Nike if you still need heal), but no more because you will lose damage with off-element, so taking offence hime is pointless. But lucky to you, fire has many good r/sr himes, like Konohana or Nergal for example so there is nothing wrong to use them.
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