Remember this my opinion and is not objective S: Very Useful A: Useful B: Alright C: Meh D: Useless Haven't Use Much: Haven't used that Character enough for an accurate ranking
Don't mind me disagreeing, but Sanae is pretty underwhelming. Sure, she may have good uses, but she's generally outclassed by a couple of healers, and is only proven useful at early-game (Which is for new players). Even her breaks are somewhat mediocre, same goes for her damage (Unless if FR is unlocked but doesn't make her viable in some other stages too).