The Wizard and the Red Pilgrim is a Manga/Manhwa/Manhua in english language, HORROR 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 a world teeming with wizards who slay humans in their unrelenting pursuit of blood, two unique paths converge. Howcuttle, a wizard who only has a mouth, perpetually gnawing at the edges of hunger, meets Beni, a girl of untainted innocence and devoid of anything but her name. Together, they embark on an aimless journey, their footsteps tracing the veins of a world replete with torment and tender compassion in equal measure. The prodigiously talented illustrator, Shida, welcomes you to this Neo-Isekai Dark Fantasy world!!!