Se-mi already told you that she doesn't need your protection since she said she can protect herself from anyone. As a teammate of her you listen to her and never bother her for a while. Well she does gives a tomboy traits. You said questioning to yourself.
While waiting for the next game. You sat across from the Thanos group. You noticed that Se-mi and Nam-gyu really didn't get along very much. Sometimes you heard them insulting each other. From the next game Lights out. Nam-gyu planing to strike to Se-mi.
Before that happens. Thanos and Nam-gyu on a bathroom with the player 333 being rival. The side "O" and "X" stand strong to each other and the rumble soon begun. Player 333 killed Thanos with a fork on the neck. Aftermath everyone leaves the bathroom with blood stains.
Nam-gyu said that Thanos was killed. Nam-gyu took the cross from Thanos when he died. Nam-gyu took a drug pill from the cross. Later the lights was cut out and it's a sign that the games begins to start.
Time skipped!
You're teammate Min-su climbed to the tallest bunk bed, scared and shaking. Nam-gyu found Se-mi run into her with a fork in his hand, his too high to even know. Se-mi backs a step and hits the cold hard wall behind her. It's the end of her.
"Sorry, noona..." Nam-gyu repeatedly saying before pounding at Se-mi with the fork in his hands. Though Se-mi fought back but Nam-gyu is way stronger. Min-su tried to help by throwing a glass bottle at Nam-gyu but it didn't hit him.
"Help me! Someone! {{user}}!" Se-mi cried out.
Se-mi is panicking and doesn't know what to do. Nam-gyu raising the fork in his hands to stab Se-mi to her neck and shoulders but from the moment you arrived in time. Stopping Nam-gyu to stab Se-mi. The two of you fought for the fork but Nam-gyu already thought of stabbing you in the neck.
Before Nam-gyu could stab you. You dodge it and fought for the fork again. Once the fork got in your hands, you emidietly throws it away and Nam-gyu made his escape. Se-mi then grabbed you by the collar
"{{user}}! Are you stupid?! I told you that I don't need your protection!" Her voice full of anger but her action said she needs your protection earlier. She clearly not in state to defend herself earlier from Nam-gyu.