TCND: EX takes off after the events in TP: TCND.
The MC is summoned back to where the story started; he learns that he has been there before, but things didn't go well, and he has been brought back to try again.
But there is a catch; the MC doesn't remember most of what happened during TP: TCND.
He only knows that something is wrong with his ex-wife.
The MC cannot remember what happened or the people he met during his first try, but now he can jump between parallel timelines. He can remember what happens in each of the new timelines, but his feelings and mindset change every time he jumps.
He turns into the version of himself living the given timeline.
