@kitaIn this chapter it is showing the backstory of Jitae and Mieum. Mieum forgot his memories so he's currently remembering them with the help of Jahoon.(Jahoon is Jitaes "friend" that owns a bar
If you want to know how this came of then read this, I typed it some days ago... Jitae was getting too attached to Mi-eum so he "fired" him. After that Jitae agreed to help Mi-eum and his dad run away to a Island. Mi-eum was packing to leave but he forgot his key card (the key card he woke up with in the hospital after forgetting everything) so he went to look for it in Jitae's room because that's where he last left it, he finds the key card and turns around to Jahoon and Jitae in the door frame. (Jahoon is Jitae's "friend" that owns a club) Mi-eum asks who Jahoon is, Jahoon says his name, Mi-eum realizes that Jahoon is the name from the name tag and Jahoon asks who Mi-eum is, Mi-eum says his name and Jahoon remembers Mi-eum is the son of a person that tried to kill Jitae. Jahoon gets mad but Mi-eum tells him that he lost his memory. Jahoon attempts to tell Mi-eum about the past but Jitae who was asleep wakes up and stops Jahoon before he gets to say much. Jahoon tells Mieum to go to him for more info then Jahoon leaves. Since Mi-eum and Jitae weren't the happiest with each other at the time Jitae tries to say something but Mi-eum stops him. Jitae says for Mi-eum to not go to Jahoon but Mi-eum goes anyway. Mi-eum goes to Jahoon's house, Jahoon invites him in, he goes in, Jahoon feeds Mi-eum a drink, Mi-eum drinks it, Jahoon begins talking about the past, and Mi-eum starts remembering. The past is what he's remembering which is being shown in this chapter.