This cannot possibly go anywhere good.
An ever-escalating hunger that robs him of personal control and will eventually lead him to becoming an unstoppable monster is not something one can merely put off until later.
It really would be for the best for both himself and anything he might care about if he just committed suicide right now. Otherwise the most probable result is that he will keep escalating this damned gluttony skill until there is nothing left that can sate it, at which point he will just go insane and kill everything, finally starving to death in the process.
Oh yeah, and one glowing red eye.
Could you get any more chuuni?
I can dig the black clothing since I've always worn black myself, but apparently one cannot attain maximum chuunibyou without being arbitrarily asymmetrical.