Dojun's life at college is off to a perfect start! Until he meets his roommate, Jaehee, a high school friend whom he may have ghosted. Jaehee claims he's over their unresolved past, but after an accident resulting in a fractured wrist, he makes Dojun a proposition...

Daisū is a a manga creator who grew up in an orphanage, and whose works do not sell very well. Daisū lives each lonely day in boredom, but one day he meets a young man named Myō who has cat ears, and his everyday life completely changes. Myō gets in trouble every day, but for the first time in his life, Daisū’s heart experiences "warmth."

Computer science major Choo Sang-woo is the epitome of an inflexible and strict rule-abiding person. While working on a liberal arts group project with freeloaders who don’t put in any effort, Sang-woo reasonably decides to remove their names from the final presentation. But he didn’t imagine how involved he would become with the person whose study-abroad plans were messed up because of that project. The involved person: the campus star who everyone knows, Department of Design’s Jang Jae-young. He has everything from skills, looks, family background and good relationships except for 1 big problem: Choo Sang-woo. What happens when an engineer and an artist whose personalities are like oil and water have to work together? Jang Jae-young is like a semantic error in the perfect world of Choo Sang-woo. Will Sang-woo be able to debug this?