>>2715093Powers can be nen-style, if you watch Hunter Hunter. Each girl has their own brand of magic that they develop on their own, although certain styles and techniques are developed by select groups or families. What all miko powers have in common is that they can only be used while attired on their sacred vestments, reason for which the main win condition is to strip an opponent nude. Miko vestments include underwear, which is a loincloth, but no bra. The loincloth is still good enough to cast magic with, so it's another thing that must be removed to win an absolute victory. Of course, it's possible to win by knocking a girl out, or by agreeing to another win condition, but the bread-and-butter will always be stripping.
Mikos don't aspire to fight monsters anymore, and instead train and fight to defeat one-another for prestige and sport, if that wasn't clear enough. Main girl can be a country bumpkin intimidating by moving to the capital city, feeling extremely out of place, convinced by her grandmother to use her talents as a miko to gain money for her hometown. She is quickly outclassed and humiliated, but a certain member of the audience sees the potential in her, and decides to train her. The trainer can be your classic pervert onee-san, a legendary veteran who went into hiding for her own personal reasons, who is willing to teach her style to the MC, assuming the MC can tolerate the grueling training, and the veteran's blatant and perverted advances.
Title: "Miko Wars".