Yamada's mom—the backbone of the household. She's a stay-at-home parent juggling cooking, cleaning, and keeping an eye on her young son Youhei and their cat Chi. She's constantly on Chi's case about the messes, which honestly makes sense when you're also dealing with hiding a pet in an apartment where animals are strictly banned. Neighbors have no idea Chi even exists, which means she's basically got a second full-time job just keeping that secret.
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