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24 Episodes 0 - 2021
Episode 1
25 mins
Shin Sol-i isn't shy about her unrequited crush on Cha Heon, her next-door neighbor. One day, she gets an idea to write him the perfect love letter.
Episode 2
25 mins
Woo Dae-sung ditches swim practice before a competition for a fun night out at karaoke. When Heon is down, Sol-i wants to be by his side.
Episode 3
25 mins
Sol-i declares she's running for class representative, surprising her friends. While Dae-sung shows his support, Heon disappoints her.
Episode 4
25 mins
Desperate for prize money so she can buy Heon a birthday present, Sol-i pours all her energy into winning at the school's sports competition.
Episode 5
Thu, Jan 7, 202125 mins
The class prepares to audition for the school play. Sol-i wants to act out a romantic story with Heon, but he's not easy to convince.
Episode 6
25 mins
After the incident at the play, Sol-i begins to avoid Heon and considers a big decision. To cheer her up, Dae-sung puts together something special.
Episode 7
25 mins
Excited to try out for a TV singing competition, Jeong Jin-hwan asks the friends to come and support him. Sol-i worries when her parents fight.
Episode 8
25 mins
Heon agrees to spend a Saturday with Sol-i, who wants to take him to see his favorite soccer team. But his mood soon sours.
Episode 9
25 mins
Sol-i is uncomfortable after discovering that the note was actually from Dae-Seong. Ha-young saves Jin-Hwan from some bullies taking his money. Heon helps Sol-i make a good impression during a class debate
Episode 10
25 mins
A flu outbreak at the school disrupts the daily routine. Heon continues to notice Dae-Seong doing nice things specifically for Sol-i.
Episode 11
25 mins
Christmas is fast approaching, and Sol-i wonders what to gift Heon. Ha-young tells her that a card alone might not be enough, as Hui-Ji is knitting a scarf for Heon. Sol-i's parents find Sol-i's card for Heon at home.
Episode 12
25 mins
Sol-i plans for a grand proposal to tell Heon her feelings at the barbecue with the help of Ha-young and Jin-Hwan. At the moment Heon is supposed to arrive, Hui-Ji appears, and this leads to a misunderstanding on Sol-i's part.
Episode 13
25 mins
Sol-I is still very disappointed about what happened at the picnic. Her friends try to get to the root of her misery. Dae-Seong helps cheer her up, while also confronting a shoulder injury that hampers his training.

Episode 14
25 mins
Ha-Young finds Hui-Ji collapsing in the restroom, after she has been found stealing from the nurse's office. Girls in the class look for a four-leaf clover to give to their crushes.

Episode 15
25 mins
The students begin to shortlist the universities that they would like to attend after high school. Sol-i worries when she finds out that the university that Heon wants to attend would take him far away.

Episode 16
25 mins
Heon tells his mother that his plans for university are actually different from what she intended for him. When Dae-Seong's grandmother goes missing, and he frantically searches for her, it forces him to rethink his priorities in life.

Episode 17
25 mins
As all her friends get into college, Sol-i feels down about herself. Heon encourages her to keep trying, and promises he'll help.

Episode 18
25 mins
Sol-i is elated when Heon makes their relationship official. Not wanting to worry Ha-young, Jin-Hwan keeps a secret from her.

Episode 19
25 mins
Struggling with her job search and with putting up with Heon's demanding work schedule, Sol-i snaps when she finds out he may be leaving for America.

Episode 20
25 mins
Hearing her dad's been hospitalized, Sol-i hurries over - and bumps into Heon, who's back in Korea. All the friends gather for drinks.

Episode 21
25 mins
Sol-i calls Heon about his actions the night before. Everyone comes together for Ha-young and Jin-Hwan's wedding.

Episode 22
25 mins
Heon shows up to a gathering in his old school uniform and gets honest about his feelings. Dae-Seong decides it's time to bare his heart to Sol-i.

Episode 23
25 mins
A lovely surprise awaits Sol-i outside Heon's hospital. The next day, Sol-i's parents come to visit her without notice.

Episode 24
25 mins
Looking back on all they've endured together, Heon recounts to Sol-i how he came to fall in love with her.
