The Breaker New Waves, Vol 4 by Jeon Geuk-Jin

In this gripping continuation of the martial arts saga, the protagonist finds himself caught in a web of intrigue and danger as he navigates the complex world of the Murim. With his mentor's teachings and the mysterious Black Origin Threshold technique, he faces formidable foes and uncovers hidden truths about his past. As alliances shift and new enemies emerge, he must harness his inner strength and resilience to protect those he cares about, all while striving to uphold the legacy of his fallen master. The stakes are higher than ever, and every decision could mean the difference between life and death.