Regressing As The Reincarnated Bastard Of The Sword Clan is a Manga/Manhwa/Manhua in english language, Manhwa series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.cc fastest updating comic site. The Summary is

회귀검가의 서자가 사는 법, Regressing as the Reincarnated Bastard of the Sword Clan, How to Survive as the Bastard of the Regression Sword Clan Theo, the young master of the powerful Ragnar family, worked tirelessly but lacked the talent to break the chains of his bloodline, ultimately being pushed out of the competition for the throne. However, even as a powerless young master, his brothers sought to eliminate him, and he was betrayed by his own mentor. In the end, Theo lost everything and faced his death. In his final moments, filled with regret over all his life choices, the unbelievable happened: he experienced a ‘rebirth. “This life will be different.” The reborn young master takes up his sword and enters the competition for the throne.