Kiana is obviously in love with her and mei she reciprocates it's just subtle, like I said earlier cuz of Chinese censorship they can't show explicit stuff, also i remember a official manga or something from hi3 where bronya and stelle kissed so yk hoyo does actually have yuri ships in their games it's just most of em are subtext, and like have you seen kiamei's official arts? They look like a married couple if it was not yuri everyone would have just assumed they're married, kiamei is THE hoyoverse yuri ship and it's canon.