Heuksa

“I shall destroy the factions of justice and avenge the deaths of my comrades!” Jeonghwa, the captain of the Black Serpent Squad, loses everyone she grew up with when the lawful factions betray them after the battle against the chaotic factions. On the verge of death herself, she must now claw her way up to deliver true justice to the so-called justice factions.
(Source: WEBTOON)