Both the MC and the girl in the wheelchair would probably benefit from psychiatric care but that makes for a less interesting story I guess.
Therapy as we know it in the west isn't really a thing in Japan anyway. Mental health is pretty abysmal across the board and the high suicide rate isn't all that surprising, considering their work culture among other things.
wtf even is this manga. Thought it was gonna be another dungeons in the modern age, which I do like. Now its like Quantum leap if Dr Beckett were a psychopathic demi-god.