Can anyone lighten me if jechan ever revealed that he regressed to ki woo jin

Spoiler
.
.
.
.
.
.
.
.
.
.
.
.
Yes, he does. He tells him everything and Woojin tells Jaechan any probably reasons for why he would have done things that caused misunderstandings between them in that TL. We also get to see Woojin's povin the last couple chapters about what happened after Jaechan's passing in last TL.