Blade Debt 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.cc fastest updating comic site. The Summary is

In times of chaos and calamity, a solitary swordsmith known as “Single-Blade Man” would emerge, offering a suitable sword to those destined to receive it. He asks for no payment, leaving only a few prophetic words behind. When the prophecies come true, he returns to collect the “blade fee.” Born in humble circumstances, Shu Yu obtained a renowned sword named “Mu Zheng” from the swordsmith Tang Dao. He learned his destiny from the prophecies and gained extraordinary powers. With this, his fate underwent a tremendous transformation.