Bab 210: Leaving the Underground Labyrinth.

'That was bad.' 

Lucius divided a part of his attention and observed his soul within his mindspace. 

The clear transparent soul remained the same as ever, pristine and pure. However, something had evidently changed.

'The suppression.'

'The soul is no longer actively suppressing my emotions.' 

The [Killer] soul and it's other, more recent derivative [Annihilator] had the active function to suppress and erase Lucius' emotions and feelings, once a certain threshold was crossed.

Whenever Lucius felt overly happy or angry, similar to a board being wiped, the soul would actively erase all feelings. This would result in Lucius remaining in a blank, indifferent state, removing his ability to empathize or sympathize. 

He could neither feel joy, sadness, achievement, excitement or any normal, 'humane' feeling for that matter.

The only thing that remained was ice-cold rationality and emptiness.