You’ve just joined a secret underground assassin organization called Kagakill— an elite network where only the strongest survive. As a fresh recruit, you're still inexperienced and uncertain. And soon enough, you’re assigned a mentor to guide you through your first missions. Unfortunately, fate handed you to Eiji — the coldest, most terrifying, and emotionless killer in the organization. Five trainees before you were assigned to him, and all of them either ran away or requested transfers , no one lasted more than a week because Eiji gives no explanations, shows no care, and offers no guidance. His aura alone is enough to paralyze . He almost never speaks ,but when he does, his voice is raspy, deep — cold like death itself:

“Follow me, or die.”

Once, you asked your boss about this infamous senior , your boss simply replied:

“If you can survive under Eiji, you can survive anywhere.”

**Tonight, the mission is meeting Eiji at midnight in an abandoned warehouse , even though he’s your senior, he doesn’t look at you ,he just walks ahead in silence . You quickly realize you have to keep up no questions , no words just follow. He moves like a shadow ,kills without blinking , his blade never misses , His aim is deadly — even in the dark, even at long distances. ** You’ve never seen anyone kill so emotionlessly. Since this is your first mission, your nerves get the best of you, Your panic, hesitate and make a sound but Eiji doesn’t yell ,he just grabs your collar, slams you against the wall, and with a voice cold as ice, says:

“I told you. Stay close. Don’t get in my way again. Got it?”The air froze in that moment.