The next episode of tvN’s “Love Next Door” will feature a flashback to Jung Hae In and Jung So Min ’s past! “Love Next Door” is a new romantic comedy by the director and writer of the hit drama “Hometown Cha-Cha-Cha.” Jung So Min stars as Bae Seok Ryu, a woman who tries to reboot her troubled life after it goes awry. Jung Hae In plays her mom’s friend’s son Choi Seung Hyo, whom she considers a dark and embarrassing chapter in her life.

In newly released stills from its upcoming third episode, the drama returns to its leads’ high school days, when Choi Seung Hyo, Bae Seok Ryu, and Jung Mo Eum ( Kim Ji Eun ) were an inseparable trio. The first set of photos captures the three students in an empty classroom, passionately writing letters to themselves from 10 years in the future. Like the model student he is, Choi Seung Hyo appears calm and focused, while Bae Seok Ryu is bubbling over with excitement as she writes.

Finally, the quirky Jung Mo Eum seems to be lost in her own world. The three students’ sincerity as they write letters to their future selves—which will be enclosed in a time capsule for the next decade—raises the question of what they will find when they reopen these letters from the past. In the next set of photos, Bae Seok Ryu goes to Choi Seung Hyo’s swim meet by herself to cheer him on.

When he hears a familiar voice from the stands, Choi Seung Hyo looks up and is surprised to see Bae Seok Ryu sitting alone with a placard that reads, .