A misunderstanding sends Bbomb home for the holidays on poor terms with Jin. Aim takes Jin to Bbomb's childhood home for a chance to resolve their problems.
Jin struggles to memorize his lines for the play. After getting locked out, Keam asks Ball if he can sleepover. Jay is privately working hard on a new song.
Jin begins rehearsals with Mark at the drama club. The engineering and law students participate in a service activity.
Jin and Somsom's date ends with disappointment for Somsom. Meanwhile, Bbomb prepares a special song with his band.
Jin opens his heart to Bbomb as they begin to stay in the same room more and more frequently.
Jin makes it clear to Bbomb that he is only able to be his friend; their friendship grows as the semester draws to a close.
Jinake Saman is the university moon in the engineering faculty, known across the whole campus as the hottest moon. There was the saying among the campus “Nothing and no one was hotter than Mr. Jin!” One day when he broke up with his girlfriend, Aim, he fell apart in despair. He later discovered that the girl who broke his heart was the cousin of law student Be Bomb. Jin misunderstands that Bom and his cousin were flirting when actually he likes Jin. Bom has liked Jin since he was a freshman one year ago after Jin exchanged Bom’s lunchbox (because he couldn’t eat anything spicy) with his own food and rice. As feelings grow between them, can Jin understand Bom’s true intentions and come to see Bom as more than just a junior?