Teenage Mercenary has revealed a special promo video for its anime adaptation.
At Crunchyroll’s industry panel at New York Comic Con, the streaming platform dropped a promo trailer for the upcoming series. J.C. Staff will animate the series with HAYATE producing. Manabu Ono will be the director and oversee the series composition. Koji Haneda will be in charge of character designs. Legendary composer Hiroyuki Sawano will join the project as the composer.

Written by YC and illustrated by Rakyeon, Teenage Mercenary has racked up 2.84 billion views worldwide as of September 2026. The series originally launched on Naver WEBTOON in November 2020, then LINE Manga in April 2021, and WEBTOON in June 2021. The series has over 305 million views on the English platform as of this article’s writing.
Crunchyroll describes the series:
When Ijin Yu was eight years old, he was the sole survivor of a plane crash. Having lost his memory, he was forced to live as a mercenary in a foreign land in order to survive.
One day, Ijin regains his memories. After bringing his ten long years as a mercenary to an end, he returns home, reunites with his family, and enrolls in the same high school attended by his younger sister, Dayun.
From bullies and delinquent students to street gangs and organized crime groups, Ijin faces one unreasonable threat after another. To protect his beloved sister and his friends, the former mercenary launches into an exhilarating action-packed battle.
The manhwa can be read on WEBTOON. The anime debuts in 2027.
Source: YouTube
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