Arpeggio and Aldo

VTM: XD Arpeggio and Aldo, my two original Characters...
 
Arpeggio (guy on left): A young boy who wants to be a knight. But his dreams of knight hood are put on hold, because after killing a rampaging bandit he finds that he had killed the host to a parasitic spirit named Aldo. The spirit attaches itself to the unsuspecting Arpeggio and that's where the trouble begins...
 
Aldo (guy on right): A spirit of mischief, he possesses the bodies of others, Aldo has currently taken a liking to Apeggio's body and fights for complete possession of it. Dragging Arpeggio through tests of value and moral, will Aldo break the young knight wannabe?