I don't think MC dies, "dies". There is something that happens after he dies and is not the "end". It is for us we are playing the game. There is also the small dialogue after in the monster world where everyone is saying how they lost their "V" cards, and if you say that you lost it with Christie, Ella says:
Ella: Mmm, I bet. But honestly, I was hoping it was me.
MC: Too bad.
Ella: Ah well, next time.
MC: What does that even mean?
Ella: *shrug*
There is something here, or I'm just tripping.
Also, I think MC is way more important to Ella than is even portrayed