Seoul Station's Necromancer

After years of fighting for survival on planet Alphen, Kang Woojin had become a fearsome necromancer and ruler of his own territory. But now that he's finally found a way back to Earth, he's nothing more than a low-level player clearing dungeons for cash. Soon enough, though, Woojin's undeniable skills have major guilds vying for his attention. And just in time, because with Woojin's old enemy threatening invasion, those skills might be the only thing standing between humanity and destruction!

[You have entered the dungeon at Gwachun Station’s 1st Exit.] “What is this?” A necromancer had returned to earth after 20 years, and the subway station… No, it had become a dungeon. Bow down to the majesty of this one man army as I begin to seize the world. [You have entered the dungeon at Gwachun Station’s 1st Exit.] When former high school student Kang Woojin finds himself returned back to Earth after being forcibly summoned to a foreign planet for 20 years, he soon finds that Earth is not the same, normal place as he once remembered it to be. With his former strength and age reset back to zero, watch Kang Woojin as he gets back on the path to becoming the Earth’s strongest Necromancer!