Mushihimesama Futari Black Label "Another Ver"

Aki, and his mother, Larsa, are going insane and seeking revenge on Reco for allegedly killing him. Her younger son Palm goes in search of Reco to learn the truth about his brother on his own. Eventually Reco finds Palm lost far from home and the two become friends, with Palm learning what happened to Aki was not her fault. Together, they aim to travel back to Palm's home and stop the madness of Larsa. Larsa is the main antagonist of the story; she pilots Stage 5's boss, Dragon Emperion.