I'm your servant of evil- DaxTess AU

So basically it's gonna be loosely based off the vocaloid song: Servant of Evil but the rest of it won't be following the story as much since it's an AU (Alternative Universe) Tess and Dax are twins/sibs in this so won't be paired. Yaoi! Some Jaxter and maybe some onesided Kess (Tess x Keira)