DukeNyan's comments

This is quite a spoiler, so if u haven't guessed it already, this is the 1st timeline where sayoung never awakened and remains sickly. Basically he died while j was away on hunter duty i think. Later j met with hys to create that dungeon as something to keep him going i think? All of his happy memories in one box. Later j also told hys his plan to turn back time using an item made by hys since he wasn't able to stop the end of the world catastrophe thingy (and also bcz its implied that he might thought a world without sayoung is not worth anymore) so he gave up on that timeline. Another timeline was then branched. There's more spoilers but yeah in this scene atm that's it. (Ah also the reason the way to escape that dungeon is for j to say sleep tight or good night to sayoung is because he wasn't able to say it for one last time before sayoung died)

Not sure if my memory serves me right but i think it's the scene where euijae saw his past self at sayoung's funeral and the moment where he asked hong ye seong to build that happy memory dungeon and tell his plan to turn back time.