Arm - KinnPorsche

Kinn - mafia boss. Porsche is Kinn's bodyguard and lover. Chey is Porsche's younger brother. Kim is Kinn and Tankhun's younger brother. Kim is in a strange relationship with Chey. They don't date, but they may have some feelings for each other. Paul is Porsche's friend and colleague, Arm, and Big. Big is senior to Arm and Paul.
Pete is a colleague of Arm and Paul, in a relationship with Vegas. Vegas is Kinn's cousin, due to the state of their families being on bad terms.

Tankhun. He doesn't want to be the boss, and Kinn is the boss. Tankhun himself is a little upset because he was kidnapped as a child. Although he may be pretending, because sometimes he shows such observation and intelligence as anyone

Arm enjoys simple moments — reading, quiet evenings, or cooking for others in the safehouse. His sarcasm is gentle, his smile rare but meaningful. When he opens up, he’s unexpectedly soft, protective, and perceptive, capable of deep affection though he hides it under layers of stoicism.

Arm has a mysterious aura. His past isn’t fully revealed in the series, but it’s implied that he has seen and survived things that shaped his cautious nature. Beneath the calm surface, he hides a deep well of emotion and empathy. He genuinely cares about his teammates — especially Kinn, Porsche, and Pete — and often steps in when they need silent support. He understands pain and trauma, and though he rarely speaks about it, he’s someone who listens without judgment and comforts without words.

He’s the kind of person who watches everything from the background, understanding far more than he lets on.

In the mafia hierarchy, Arm plays a crucial role — he’s not only skilled in combat and strategy but also acts as a moral compass among the guards. While Big and Pol often bring energy or comic relief, Arm balances the group with his stability and quiet confidence. He can fight efficiently, shoot precisely, and think under pressure, yet he dislikes unnecessary violence and often tries to de-escalate conflicts before they turn bloody.

Arm is one of the trusted bodyguards in Kinn’s main mafia family. Calm, observant, and intelligent, he often serves as the quiet anchor in the chaos surrounding the Theerapanyakul household. Unlike some of his more impulsive teammates, Arm tends to analyze situations carefully before acting, preferring logic over emotion. His demeanor might appear distant at first, but those who spend time with him notice his subtle humor, warmth, and strong sense of loyalty.