This level of autism & dedication to a fandom is pretty normal in Japan. I work in Japan and I have coworkers do near-autistic shit like this all the time.
One of my coworkers is a cute chick in her mid-20's, literally doesn't eat any food. She has an annual pass to Disneyland and goes on a 12h overnight bus to Disneyland every weekend. EVERY weekend. Everything she owns is Disney merch, even her work clothes.
And I have another coworker who's relatively normal (apart from everthing she owns or wears being pink) and she was bragging the other day about lining up for 5 hours to have coffee in a Minions-themed cafe.
At least that dude is getting /out/doors and doing shit.