Definitely a subject that hits close to home for me. I think videogames are a medium uniquely suited to exploring themes of loneliness or solitude. The imagery conveys both sides of the coin well.
It'd be cool to see the competing inner thoughts depicted as separate internal characters, Disco Elysium style. I'm also curious about the specifics of this character's past, it would be cool to see this explored in more than just abstract terms and more with sensory detail, memories, etc.