Ominous entity

Theme: A MMO where you learn from ghosts to forge the sacred sword Story:In the future, ghosts have been proven to be a real thing and war have been declared against these un-godly beings, and you, the top marine have been send to a sacred tomb to investigate if the rumors are true, about the remnants of the ghost gathering at this place, to put a end to their madness once and for all.  But the hu…