
Spoilers
Hot stranger drops Sangho off and seems to be very worried about him. When they say goodbye he stroke's Sangho's cheek and Sangho blushes but the reason seems to be that he's kind of embarrassed by it or was caught of guard. Right now it doesn't look like Sangho has any romantic interest in that guy.
Then Hakdo's sister comes around the corner, watching a drama on her phone. She was thinking about how nosy character's in dramas a necessary for development but are annoying in real life when she saw Sangho and hot stranger together. She was initially very curious about their relationship but decided not to be a "nosy Kelly" (like in the drama) and move on.
However, her curiosity took the best of her when she met Hakdo on the roof and startet questioning him about his mood. He wasn't having it and left.
The next scene is his sister thinking about whether Hakdo's feelings for Doochi have changed.
The last scene is Sangho in front of his apartment on the phone with Hyung. He sees Hakdo crouching in front of his door and asks him why he didn't let himself in. Hakdo reveals that he also waited in front of his door yesterday and knows he Sangho didn't come home. He asks Sangho where he was and seems to be a little bit jealous.
Starting next Saturday it will update weekly :D (it used to update three times a month).
As for the identity of the hot stranger
Spoilers
We still don't know ;) .