Actually, it's simple: after sustaining a head injury, the character realizes that his friend was nothing more than a figment of his imagination.
Well, let's say... How would we play this out? The characters didn't die, after all. Every man for himself then, or what?🤔
Ничто не возникает из ничего и ничто не пропадает бесследно.
Если где-то чего-то убудет, то в другом месте добавится.
(Закон сохранения).