man poor Neku. Since Another Day Neku says his friend died in an accident, and then Main Timeline Neku says "this is like that one time" from someone dying in a very specific way, then his friend more than likely died the same way. Car crash
Fun that in this world Neku was able to get over the death of his friend via the game and he were able to find more people, hence leting him be without pain And sad for Vanilla Neku that necer found a hobby to enjoy that
