Crash Course in Romance — Season 1 Episode 9

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S01E09

The Butterfly Effect of Our Relationship

★ 9.0 11 Feb 23 71 menit

Chi-yeol and Haeng-seon deal with the fallout after their secret is discovered — forcing the two to confront what it means for them moving forward.

DramaComedy

Episode

Season 1

S01E01 14 Jan 23 ★ 9.0 75m You and I, the Intersection of Two Universes As competition in her class ramps up, Nam Hae-e anxiously awaits her math score. Choi Chi-yeol is embroiled in a scandal involving one of his students.
S01E02 15 Jan 23 ★ 8.0 75m Probability of Encountering Your Enemy at Your Worst Nam Haeng-seon attempts to register Hae-e into The Pride Academy. Desperate for Haeng-seon's food, Chi-yeol visits her store in a disguise.
S01E03 21 Jan 23 ★ 9.0 73m Number of Outcomes Where Dislike Becomes Like Haeng-seon begins fawning over Chi-yeol after discovering his true identity. A change in the Pride Academy's schedule creates a stir among the parents.
S01E04 22 Jan 23 ★ 9.0 69m Revolt of the Arithmetic Sequence Haeng-seon gets a taste of the vicious politics among the academy's parents. She later goes to great lengths to make things right for Hae-e.
S01E05 28 Jan 23 ★ 9.0 76m The Secret Probability Distribution of X and Y Haeng-seon and Chi-yeol work out an arrangement for Hae-e's tutoring. A mysterious tragedy leaves the academy and its parents rattled.
S01E06 29 Jan 23 ★ 9.0 76m There Are No Correct Answers in Life, Only Best Answers A painful past comes back to haunt Chi-yeol. Bang Su-a becomes suspicious of Hae-e after finding her secret worksheets on her desk.
S01E07 4 Feb 23 ★ 9.0 70m The Very Average Laws of Attraction Hae-e ranks first in her class, causing drama among other parents. Chi-yeol and Haeng-seon grow closer as he spends more time with her family.
S01E08 5 Feb 23 ★ 9.0 67m Chance Becomes Fate through Inductive Reasoning Haeng-seon realizes her own feelings after seeing Chi-yeol at the academy. Su-a connects the dots and begins to make sense of Hae-e's recent successes.
S01E09 11 Feb 23 ★ 9.0 71m Sedang diputar The Butterfly Effect of Our Relationship Chi-yeol and Haeng-seon deal with the fallout after their secret is discovered — forcing the two to confront what it means for them moving forward.
S01E10 12 Feb 23 ★ 9.5 72m Emotion, the Variable That Alters Relationships A public revelation leaves Haeng-seon and Chi-yeol's relationship in limbo. Meanwhile, Chi-yeol faces the repercussions of recent events.
S01E11 18 Feb 23 ★ 9.0 74m The Functional Relationship of Our Love Tired of her loved ones facing scrutiny, Hae-e makes a bold confession to the world. Haeng-seon and Chi-yeol navigate their road ahead post-scandal.
S01E12 19 Feb 23 ★ 9.0 77m Point of Intersection between Comedy and Tragedy A shocking arrest leaves the academy's parents — and Hae-e — concerned. Haeng-seon and Chi-yeol maneuver the days after their first fight.
S01E13 25 Feb 23 ★ 8.0 74m How We Approach an Unsolvable Conjecture Hae-e attempts to get a hold of Lee Sun-jae after being put in a difficult position at school. Haeng-seon catches Ji Dong-hui in a hostile moment.
S01E14 26 Feb 23 ★ 9.0 73m Find the Unique Solution News about Hae-e leaves those around her feeling rattled. Haeng-seon begins to suspect something's off. Chi-yeol confronts Dong-hui about his behavior.
S01E15 4 Mar 23 ★ 9.0 76m The Result of Chance and Inevitability Lee Sun-jae's confession ignites a scandal at the school. Chi-yeol attempts to put an end to Dong-hui's scheme before it's too late.
S01E16 5 Mar 23 ★ 9.5 77m You and I, the Union of Two Universes Grappling with her mother's return, Hae-e announces a shocking decision. Haeng-seon and Chi-yeol make a pivotal choice about their future.