1. Aioros is injecting or taking medication to hide his chief wolf scent....that's why he murdered the doctor.
Or
2. Either of the brother developed split personality the is why D knows what Airos feels for Xiu and D can immediately kill anyone that piss off Aioros..
This can have 2 possible plot...
1. Aioros is injecting or taking medication to hide his chief wolf scent....that's why he murdered the doctor.
Or
2. Either of the brother developed split personality the is why D knows what Airos feels for Xiu and D can immediately kill anyone that piss off Aioros..
Waiting for is what the real deal...