^ Yeah, she's one of the "rarer" Rares lol
I easily maxed her skill levels using HT Ns, but it took while to finally fully LB her, same for Rare Zukki.
Apparently there's a Google Wallet app, so Im assuming (since ive never seen/used it) its like paypal for google where the game will just connect to the app that already has your card info previously filled out and not care if you're in Japan or not lol
Edit: There's a paypal option, or manually put in your card, and it's also in English so yeah, I can see how easy it is for us Androids atleast...
LOL "wonky" iOS user
tbh I thought itd be easier for you guys since you guys can get the game by just having a Japanese Apple ID account (im assuming you can probably just update your account with card info to pay for in game purchases? unless its country locked...which I can expect for Apple just cause they can be wonky like that hehe)
Edit: boinsie wrote about the whole gacha process on page 7 under spoilers (the one who uses Google Wallet)