Well at least thats a pretty reasonable decision to quit while it's only been a few months, losing 50 years of your memories is a tough sell even if you get to hang out with a sexy yeti
Well, it was either that or work until the day he dies anyway. But yeah, really going to miss this one. It had a lot of potential and it was doing just fine.
The memory eraser worked on Ryuko in Chapter 2 so even if Moriya is a secret citizen, it should still work. Unless you meant he's a special kind of secret citizen that's specially immune to it.