Right after killing the woman, Lux's expression contorted into one of pain, his earlier haughty and arrogant attitude was nowhere to be seen.
He started to breathe roughly for a while, until eventually he had to go down on one knee.
The power previously coursing through his veins started to dissipate and he could feel a sudden weakness washing over his body.
'So this is the power I have to pay for fully activating a Path's power?' Mused Lux, amazed at the sheer possibility of such a thing happening.
While he also stepped on the Holy Class, his energy and soul spirit increasing in both quality and quantity, he was still too new to use such a powerful mean yet; like tapping in the power of his Path.
Since it was also relatively new, it was only normal for him to suffer a small backlash.