Because This Is My First Life

The morning after Ji-ho kissed a total stranger, she wakes up to find out that her new housemate whom she thought was a woman is actually a man. Rather than the fact that they kissed, Ji-ho and Se-hee are sad that they can’t live under the same roof as they are opposite genders.

When Ji-ho gets proposed by Se-hee, she becomes confused as she doesn’t know what his intentions are. Sang-goo reunites with Soo-ji, but Soo-ji has no recollection of what happened before.

Se-hee and Ji-ho decide to get married, so naturally, Ji-ho introduces her boyfriend to her family. Se-hee must impress Ji-ho’s patriarchal father in order to get his approval. Meanwhile, Won-seok tries to make up with Ho-rang by getting her the sofa she wanted.

Ji-ho and Se-hee’s parents meet each other for the first time. Although Ji-ho and Se-hee agreed on not holding a wedding, Ji-ho’s mom and Se-hee’s dad think otherwise. Won-seok still can’t understand why Ho-rang got mad.

After the wedding, Ji-ho feels like she and Se-hee have gotten closer. Won-seok and Ho-rang run into each other at the wedding. Meanwhile, Sang-goo gives Soo-ji a piece of his mind when he sees her being mistreated.

Bok-nam helps Ji-ho get a job at the café he works at. Even though Ji-ho tells him that she’s married, he keeps coming onto her. When Se-hee sees the two together, he becomes jealous without even realizing. Meanwhile, Ho-rang comes up with a plan to make Won-seok husband material.

When Se-hee learns about how Bok-nam got reported on the dating app, he looks into it with great interest without letting Ji-ho know. Sang-goo visits Soo-ji at a café near her office, but she acts cold towards him. Unaware of Bok-nam’s intentions, Ji-ho agrees to drink beer with him.

Se-hee saves Ji-ho from Bok-nam. When the two get back home together, they have an honest talk. Ji-ho, Soo-ji, and Ho-rang go to a get-together between school friends.

Ji-ho starts developing feelings toward Se-hee and feels happiness from being able to see him every day. However, it does not last long as Se-hee’s mother pays a surprise visit. Meanwhile, Sang-goo cannot resist Soo-ji.

Se-hee takes a day off from work for the first time and goes to Namhae in order to help Ji-ho’s family with making kimchi. When Soo-ji finds out that his colleagues at work made a bet about her, she becomes furious. Before leaving to go see Se-hee, Ji-ho finds a poetry book that belongs to him.

After their first kiss, Ji-ho and Se-hee come back home and say goodnight in front of each other’s bedrooms before going to sleep. For the first time in her life, Ji-ho feels a strong desire lurking inside her. Won-seok feels like something is off between him and Ho-rang. Meanwhile, Se-hee and Ji-ho go on their first date.

Soo-ji gets mad at Sang-goo for invading her privacy, and Sang-goo tries to understand her. The friends find out about how Won-seok broke up with Ho-rang. Meanwhile, Ji-ho gets a job offer from a production company.

Se-hee runs into Jung-min. When Ji-ho meets Jung-min the next day, she asks about her past. Se-hee comes to realize that he is only worried about Ji-ho and that he has gotten over Jung-min. Meanwhile, Soo-ji takes Sang-goo’s advice and confronts her abusive colleague.

Se-hee accepts Ji-ho’s suggestion to terminate the contract. Won-seok and Bo-mi go to a restaurant together and run into Ho-rang. Trying to ease the pain, Se-hee drinks until he passes out.

After Ji-ho moves out, Se-hee sells his house. Bo-mi tells Won-seok about her feelings and Soo-ji starts her own business. Will Se-hee and Ji-ho end up getting a divorce?