Here is a maxed out save just before 0.37 content. Extract into `~/.renpy/Takei's Journey` (or `%appdata%\RenPy\Takei's Journey` on windows), then the save will appear in the second saves page in-game.
A bit latr, but this is probably due to low chakra. It's the only stat where in game you can raise both, max cap and the actual stat. Latest version should let you increase both at will. Try to have at least 200 for all events to trigger.
Mod updated to allow explicitly increasing max chakra which persists. I couldn't reproduce "AttributeError: 'StoreModule' object has no attribute 'maxhanainuzuka_rs'" error, but that variable is declared in the main game for sure. I suspect you're using early release of 0.31 which did not have...