TV Mercy for None Mercy for None 7.7/10 by 143 users After severing ties with his gang, a former gangster returns to uncover the truth behind his brother's death — embarking on a relentless path of revenge. Details Casts Posters Images Title Mercy for None Alternative Titles First Air Date 2025-06-06 Last Air Date 2025-06-06 Number of Episodes 7 Number of Seasons 1 Genres Action & Adventure, Drama, Networks Netflix, Casts So Ji-sub, Huh Joon-ho, Gong Myoung, Choo Young-woo, An Kil-kang, Cho Han-cheul, Lee Jun-hyuk, Cha Seung-won, Lee Beom-soo, Jung Gun-joo, 이정훈 Plot Keywords , Nam Gi-jun So Ji-sub Lee Joo-woon Huh Joon-ho Gu Jun-mo Gong Myoung Lee Geum-son Choo Young-woo Koo Bong-san An Kil-kang Choi Seong-chul Cho Han-cheul Nam Gi-seok Lee Jun-hyuk Cha Young-do Cha Seung-won Sim Seong-won Lee Beom-soo Cheon Hae-beom Jung Gun-joo Joo-woon's gang member 이정훈