nah, this is what readers want, Akira unleashes his true power
If it was converting lifespan, it seems to me nobody would be so deeply afraid of it. After all, the user would perish quickly enough, most likely.Wait. So soul is actually converting his lifespan to magic that can't be sealed or erased right? Cause i only kinda remembered the reason he can use soul freely against emilio is because emilio set up the battle field to be full of dead souls