After being stabbed to death after being robbed, a human wakes up to find himself transformed into a menacing skeleton, reborn as Deimos, trapped in a dark dungeon facing a mysterious woman with bat wings and a whip. Confused and disoriented, he quickly realizes that he has lost his memories and is thrust into a strange world where he must navigate the whims of a vampire queen and her army of monsters and demons. As he struggles to understand his new reality, Deimos discovers that he possesses a system linked to the Seven Deadly Sins and must reclaim his strength while facing the consequences of the past actions of the previous owner of that body. However, things won't be so simple since the vampire queen is madly in love with him, but she is a psycho who would make the most virgin of the men choose chastity over her. But as he delves deeper into this dark and perilous world, Deimos begins to unravel a web of betrayal and intrigue that threatens not only his new own existence but the fate of the entire world. With enemies on all sides and secrets lurking in every shadow, Deimos must navigate the treacherous waters of power and deception to uncover the truth about the life of the previous owner while also protecting himself in the midst of a world war where everyone is a potential enemy. Will he become a toy for the vampire queen, or will she become his toy? No one cay say for sure...