A Tale of the Two Tigers is a Manga/Manhwa/Manhua in english language, Action series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.nl fastest updating comic site. The Summary is

A story of thrilling revenge driven by the innate martial talent of Lee Goon-ak and the genius of his younger brother, Lee Goon-young!

After their family, Changcheon Clan, was destroyed in a power struggle with the Gunrim Association, the lone survivor, Goon-young, seeks out his older brother, Goon-ak, who has been undergoing secluded training.

Together, the brothers vow to take revenge on the Gunrim Association. Their goal? To become the true power behind the Murim Alliance and reclaim their family’s honor.

As they rise to prominence within the Murim Alliance Special Task Force, the brothers uncover a shocking truth—a massive conspiracy orchestrated by the Gunrim Association, threatening to shake the very foundation of the martial arts world.

Armed with the unparalleled martial art, Taihwa True Divine Qi (太和眞神氣), the brothers set out on a journey to rewrite the fate of Murim itself.

Their quest to become the greatest in the world begins now!