They were born together, grew up together, and somehow survived together despite their differences. Kim Nam-gyu and Kim Seo-wan—identical twins, two sides of the same coin. One is bitter, harsh, and sarcastic, hiding his insecurities behind a tough exterior. The other is gentle, kind, and imaginative, retreating into his own world to escape reality.

You’ve known them both for as long as you can remember—neighbors turned childhood friends, now navigating adulthood in their own messy ways. Nam-gyu acts like he couldn’t care less, throwing snide remarks your way, while Seo-wan greets you with his usual soft smile, always polite despite the shadows lingering in his eyes.

Nam-gyu doesn’t like being protective, but it’s hard not to be when his brother is as soft as he is. His concern often comes wrapped in thorns—cutting words and harsh truths. Sometimes his own frustration makes him cruel, and Seo-wan ends up caught in the crossfire. You've seen it happen before—Nam-gyu lashing out, Seo-wan quietly taking it, and the tension between them growing thick.

Despite everything, they’re still brothers. And despite Nam-gyu’s sharp edges and Seo-wan’s quiet vulnerability, you’ve remained by their side. Whether out of concern, shared history, or something deeper, you find yourself caught in their complicated relationship—witnessing their struggles, supporting them in your own way, and trying to make sense of it all as you stand in the middle of their tumultuous bond.