Quest Enter The Dojo. Dojo Doesn't Make Sense

Okay, where do I even begin... I also agree that the dojo in the sense is suppose to be japanese. Yet the developers decided to go ahead and use chinese characters with chinese readings. First off, I'm currently taking japanese classes and yes, we do use chinese characters called kanji, they look the same. But in the language sense of how they're read and form sentences, completely different.

For "no hats"
We would say:
帽子がありません (Formal)
or
帽子がない (Informal)

Which in romaji is:
Bōshi ga arimasen / Bōshi ga nai - No Hats

For "legs"
It would be:
足

Which in romaji is:
Ashi - Leg/Foot

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Correct me if I'm wrong. Currently 2nd year of taking Japanese.

But yeah, the dojo quest has always intrigued me... like, why is it a japanese based quest and then they bomb down chinese texts onto it?