As soon as Lucien was done saying that he turned his attention towards Aponi and his gaze turned so cold with murderous intentions surging out uncontrollably, even Alice jumped off his body in fright! After returning from the underworld, Lucien's soul has been greatly affected by the aura of the underworld making his soul undergo a terrifying change.
Rakuzen gazed at Lucien's soul and on them were countless tattoos belonging to the thousands of demonic beings he murdered down there. Originally people couldn't see this on his body but when he got pissed his normal beast assimilated tattoos vanished and the new ones appeared. But unlike his original tattoos, these ones were life-like and roamed around his body without restraint.