#1
S1E16
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.
Episode Ratings Grid
M
Loading chart...
Great
Good
If You Liked This
See AllEpisode Power Rankings
The peaks and the valleys. Find the essential episodes — and the ones to skip.
#2
S1E8
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.
#3
S1E9
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.
#4
Probability of Encountering Your Enemy at Your Worst
S1E2
#5
The Secret Probability Distribution of X and Y
S1E5
#6
Emotion, the Variable That Alters Relationships
S1E10
#7
Find the Unique Solution
S1E14
#8
Number of Outcomes Where Dislike Becomes Like
S1E3
#9
The Functional Relationship of Our Love
S1E11
#10
Revolt of the Arithmetic Sequence
S1E4
Lowlights
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.
#15
How We Approach an Unsolvable Conjecture
S1E13
#14
You and I, the Intersection of Two Universes
S1E1
#13
There Are No Correct Answers in Life, Only Best Answers
S1E6
#12
Point of Intersection between Comedy and Tragedy
S1E12
The Quality Arc
Each point is an episode, plotted in order. Colored bands mark season boundaries. Look for the rise, the plateau, or the decline.
Loading chart...
Episode Engagement
High votes + high rating = beloved classic. High votes + low rating = notorious stinker. Low votes + high rating = hidden gem.
Loading chart...