Suggested by Sonic Kotan is a pretty nice character who will always do her best to help out in a pinch even if she is outgunned. That being said, enthusiasm is no substitute for pure power. Botan would still have the edge here because she has some good sci-fi tech and a broom which lets her fly. She’s more accustomed to dealing with supernatural threats and that experience will really come in handy for a fight like this. Keiko needs some kind of power up to win this fight. Botan wins.