@Glomoro It hasn't been said outright that he is a Hikikomori, but he lives a shut-in life and even displays signs of agorafobia and strong social anxiety.
Yes, he can shut himself in like that because he is financially independent, but he still seems like a Hikikomori to me. That's not a judgement from my side, debilitating social anxiety is a real problem.
My point was just that pulling him out of the house by the proverbial scruff of the neck isn't really helping. Exposure therapy is best used gradually.
Also, my comment was mostly made in jest, since this is a 4-koma comedy manga, so don't take it too seriously ;-)