MMORPG 'Tower of Avalon'. After transmigrating into a necromancer vampire, all I received for helping the protagonist's party was meticulous scheming and betrayal. Deceived by their lies, my body was bound in iron chains and sealed in the lowest level of a labyrinth where not a single ray of light penetrated. Thus, grinding my teeth with rage and betrayal, an eternity passed. Finally, on the thousandth year, the seal was broken. Now, all that remained within me was a vicious thirst for revenge. [Cover art created with AI. I take full responsibility for any issues that may arise.]