[As far as he's concerned, blending in is going to work really well until the day that it rather abruptly doesn't; he's fairly sure that one day someone's going to show up and everything's going to go splendidly to shit and no amount of lying or friend-making is going to fix it, but that's depressing and so he'd really rather not.

...As for his major, however - ]

Yes, Banjou-san, social welfare. I was preparing for my fourth year before everything happened and I picked up our current line of work.

[And then everything sort of kept happening and didn't stop. Needless to say, actually finishing that degree isn't exactly high on his list of priorities right now.]

Surely it's not that surprising.