Jhin is part of the 907th unit and serves as a sniper. He is shown to be a calm and collected individual, along with being the smartest among them. He usually makes sarcastic remarks, often making a witty remark, but he tends to care a lot for his comrades in his squad.

Spoiler

Jhin was selected by Crosswell to find the successor of the sword. Due to the reason that Jhin was good in range, Crosswell awsn't able to teach him other than the gun theory since Crosswell's specialty was being a swordsman. It means that Jhin would have to work hard with perseverance if he wants to learn how to wield the strongest swords that Crosswell wanted to find a successor. Ultimately, it was then that Iska and Jhin knew each other and became best friends.