Omori/Sunny is the narrator of this entire game. 

Please try and be able to do a younger/older type of voice depending on which person it is. Sunny would be older meaning around 16 and Omori would be younger being around 12.

He is monotone, expressionless, quiet and doesn't talk very much outside of the little descriptions you will read throughout the game. 

And I'm thinking of switching the POV of the narration box to first person rather than second person, so you are pretty much narrating the game.