Commission from the Winchester family.

It soon got to the stage he was getting a glimpse of the blue mana with his eyes. At that moment he felt like the entire environment including his was damped by a liquid.

2 hours later after the soul candle was lit, the color of the air in the room had changed to blue and so did Blake's eyes. His black pupil had changed to light blue while his eyes as a whole began radiating a blue color.

"Is this mana vision?" Blake waited for the system's confirmation before he could celebrate.

[Yes, it is the initial stage of mana vision. At this stage, you can see the basic representation of spells as the blue form of mana, but the effects of the candle aren't done yet.] The system explained.

Blake looked around the room, and apart from the damped blue look and the now mana Eiffel tower in front of him, everything had remained the same.