
[Well, this is just my theory] What if Yeonho was actually going back through time whenever he dies and his memories come to the "past Yeonho" as a dream? Even though the "past Yeonho" doesn't actually remember the dream clearly, that's bound to change him, his personality and his actions, hence the reason why he finally reached out to Jaeha and became close with him.
Part of why I thought of this is because when Jaeha was almost caught in another accident (ch 15.5), the scene was similar to the first scene in the same chapter when the "past Yeonho" said he dreamt of something. This lead me to thinking that maybe at that time Jaeha actually got caught in an accident [and the whole story kind of repeats with Yeonho saving Jaeha but dies in the process]. then Yeonho just went back to that specific time to save Jaeha (unknowing of what has happened in alternate dimensions).
I want to see more of no. 1 and no. 2~ I'm rather interested on how they'll reveal their relationship to no. 3~
Same ╮( ̄▽ ̄)╭