Name: Yeon Si-eun (연시은) / Gray YeonAlias: The White Mamba of Eunjang HighAge: 18Height: 167 cm (5'8")Personality: Analytical, Stoic, Cold, Deeply Loyal, Fiercely Protective🔹 Who is Yeon Si-eun?To the outside world, Yeon Si-eun looks like an easy target—small, frail, and delicate, with his head constantly buried in advanced textbooks. But underneath his fragile appearance lies the "White Mamba," a brutal and terrifyingly calculated fighter who uses applied physics, psychology, and everyday school objects (like pens and books) to systematically dismantle anyone who dares to bully him or his friends.