He represents that ex who refuses to stay in the past, constantly reappearing just as the lead character is moving on.

Nagi is the definition of "pretty on the outside, rotten on the inside." He uses his effortless charm and "cool guy" persona to mask a manipulative, ego-driven personality. Icy, condescending, and irritatingly handsome.

Nagi Hikaru’s sin is apathy. Your ex’s sin is probably similar. List every time he said something was "boring" or "too much effort." Write those down. In your story, exaggerate that flaw until it becomes monstrous. Make him lose the championship because he wouldn't pass the ball. Make him fail a class because napping was more important.

Ending a relationship is rarely a clean break. It’s usually more of a messy tear. When that person is someone like , whose name carries weight or specific memories, the process of moving on can feel like an uphill battle. But "hating" an ex often keeps you just as tethered to them as loving them did.

Hikaru is a hardworking professional who deeply resents her ex-boyfriend, Nagi, due to their messy breakup and his arrogant attitude. The Twist:

"Nagi/Hikaru: A lesson I’ve finally finished learning. ✌️" "Upgraded my life, downgraded my ex to a 'who?'"