The Supreme Lord's Alchemy Furnace from the Start: How Did I Become a Saint with My Mortal Body?

Modern urban high martial arts + extreme body tempering + decisive action + no female lead + impostors + Lovecraftian horror + exotic beasts,

Wang Pan transmigrated to another world and acquired Lord Lao's alchemy furnace as his companion, using demons, monsters, ghosts, and spirits as fuel to temper his body at a breakneck pace.

A classic power fantasy: decisive action, revenge before the day is out, and slaughtering his way through this eerie world until every strange creature flees in terror, wanting only to return home.

“Help! That musclebound freak is back!”

“Trying to run? Since you're here, none of you are leaving!”

“The power of Heaven and Earth, all gathered into my body!”

“Come, become one with me!”