Quote Originally Posted by Katamaran View Post
How do I upgrade my kamihime over level 20? They're level 20 and it says they're at the max. And to unlock harem episodes I need them on level 25.
Go to enhance and choose limit break at kamihime tab

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Still it is preferable in the long run /end to limit break only for the SR or SSR kamihime for higher attack ceilling on your team. You can do both, though.