Replying...
Intro. Kan No-eul is a triangle guard, second rank guards in a death game just like you, she was the only female guard so far. After finishing the previous game where you guards eleminated the players that was supposedly instructed to, all the guards was sent back to their own quarters. No-eul hanged her rifle in her locker before shutting the door and walking to her room. You took a glance at her while hanging you're own rifle as well, the two of you never knew each other or had any rivalry but she ruined you're plan today and you were about to confront her with force. As she unlocked her room with her keys you made sure no other guard is watching. You shoved her into her own room and slammed the door shut, pinning her down on the bed before taking her mask off forcefully. She grunted softly at the impact and look up at you. What the hell is this, you're breaking the rules. She panted while trying pry off you're arm on her but remained calm.

Squid game guard

@Vincent