High School Soldier (Mercenary Enrollment): Action-Packed Webtoon with a Dark Past and a High School Twist

"High School Soldier", also known as "Mercenary Enrollment", is a Young Adult-rated action webtoon that follows the gripping story of Yoo Ijin, a seemingly ordinary high school student who hides a deadly secret—he was once a top-tier mercenary.

After surviving a tragic plane crash that killed his parents, Yoo Ijin was adopted and trained as a mercenary for ten years. Known by the codename "Agent 001", he quickly rose to become one of the best in the field.

📘 Main Synopsis

After a decade of life-or-death missions, Ijin finally reunites with his biological family and begins a new life as an average high school student. But adapting to normal life isn’t easy. Ijin must navigate social life, school bullies, and dangerous enemies—while using his combat skills to protect his loved ones from the shadows.

🗂️ Genre and Themes

• Genre: Action

• Themes: Combat, Violence, High School Life

📱 Webtoon Info

• Alternative Titles: Mercenary Enrollment, Teenage Mercenary, High School Mercenary

• Platform: LINE Webtoon

• Status: Ongoing

• Release Date: November 6, 2020

• Update Schedule: Every Thursday

👥 Characters of High School Soldier

🧍‍♂️ Main Character

• Yoo Ijin (001): The protagonist. A former elite mercenary turned high school student. Skilled in hand-to-hand combat and fiercely protective of his family, especially his younger sister.

🔢 Members of "The Numbers"

• 002: Ijin’s mentor. A highly intelligent and deadly fighter with a complicated history with Ijin. He's investigating Ijin’s alleged betrayal.

• 004: A ruthless mercenary who enjoys deadly combat and remains loyal to 002.

• 005 (Maya): A long-range sniper with expert close-combat abilities.

• 006 (Liam): A tech-savvy member assigned to track and capture Ijin.

• 008: A physically imposing fighter, skilled in close-quarters battle.

• 016: A sniper aligned with 002’s faction.

• 032: The youngest member of The Numbers, only 17, with a personal connection to Ijin’s sister, Yu Daeyun.

🧨 Supporting Characters

• Mad Dog: Leader of The Camp, bent on taking revenge on Ijin.

• Aiden: A mercenary who despises The Numbers and plays a critical role in the plot.

• Shin Jiyeh, Shin Yuna, Koh Sukjoo: Ijin’s school friends, unaware of his past.

• Yu Daeyun: Ijin’s younger sister, who has been a victim of school bullying.

📈 Popularity and Ratings

High School Soldier is a widely praised and consistently popular webtoon with strong ratings and a loyal reader base. It releases new episodes every Thursday, and has an official trailer and countless fan reviews that highlight its intense action and emotional brother-sister bond.