Seoul Station’s Necromancer

Reading Seoul Station’s Necromancer manhwa, Seoul Station’s Necromancer manga with alternative name: Seoul Station Necromancer / 地铁站的亡灵巫师 / 서울역 네크로맨서 with Description: After spending years struggling to survive on planet Alphen, Kang Woojin becomes a powerful necromancer and leader of his own territory. However, when he finds a way back to Earth, he starts off as a low-level player earning money by clearing dungeons. But soon, his exceptional skills are noticed by major guilds, and they compete to recruit him. As luck would have it, his old enemy is threatening an invasion and his skills may be the only thing that could save humanity from destruction.