: Jae-young decides to torment Sang-woo, not through violence, but by disrupting his carefully curated routine—showing up in his favorite "unoccupied" spots and wearing the color red, which Sang-woo hates.

: As they are forced to collaborate on a mobile game, their animosity turns into curiosity. Sang-woo, who views emotions as "bugs" in his system, finds himself unable to calculate or predict his feelings for Jae-young. The Depth: Logic vs. Feeling

The story concludes that human connection is inherently "erroneous" by logical standards. It is messy and unpredictable, but as Sang-woo eventually discovers, it is the only thing that makes the "program" of life worth running.

In computer science, a occurs when a program is syntactically perfect but produces an unintended result because the logic is flawed. This story uses that concept as a metaphor for a relationship between two fundamentally different people. The Premise