Since it's a flat bonus, I think I should be using them to boost someone with a low base stat like Toad Lily's attack. I'm curious to hear what you all are doing though. Or do you just give them to your favorite girl or are you saving them?

You use it on your fav waifu, that's about it. The one girl you like a lot and want to keep in your squad forever.

Using all ampys i get on my Orchid.

Same here, gave 'em all to Orchid =)

I'm giving them to Convallaria. Going to keep her as my 1st squad leader for a long time.

I'm waiting for edelweiss.

The one 6* I have, since I figure no matter what comes in the future she'll find a spot somewhere on my team.