Present seungtae left the diary alone as he goes to sleep.
The scene changed into the young seungtae, opening his diary and found the present seungtae writing today about jihoo in his own diary. He was confused bcs he never wrote this
After seungtae comes back home he remembers the memory when the train already left and jihoo still hasnt come back yet. He decides to went back home and found the crowd in his neighborhood. The neighbors talks about "how many person has it been now."
Seungtae answered that he doesnt remember jihoo's face at all no matter how hard he tried to remember. He asked if hwangyeon knows anything about jihoo like where he is or what he did now
The next morning he meet hwangyeon again in the dance class. He asked hwangyeon if they have the photo they took together with jihoo (in the prev tweet). Hwangyeon said he has it and he will find it later, he asked why he suddenly asked for that.
Jh: until then i will think about it. You wait for me first. Then, i will go first. It could be our last day together so im going to say goodbye. Goodbye, seungtae
Jh: what did you just said? You're really crazy. Our home is here, how about your family? You will regret it later. Go home now.
St: i wont regret it, never. But if i let you go now, i will regret that more, for life. Hyung, please lets go together
Joins them for a photo. Seungtae snapped awake from his face and think about the dream he just had. That man's face is unseen but seungtae knows his name, Seong Jihoo.