Master and her tower
The first time hurt like hell.
But... it was warm.
I experienced a new world that day.
That warmth, that gentle touch on my skin, that painful but fulfilling feeling.
Those were some of my best first times.
After that abundant energy penetrated my whole body and created the channels necessary for the usage of this skill, I suddenly became stronger.
Like, I could use the Mana inside my body more freely, and use the new type of energy that was stored in every part of my body with even more proficiency.
It was thinner than Mana, but I knew I could use it with even more proficiency than Mana.
Right now, this was at the (tier-0) when compared to Mana.
But, unlike Mana stored in my Mana nucleus, I stored this power in my whole body.
So, even at this stage, I can use (tier-1) spell easily.
Though it finishes pretty quickly and I would need a longer time to recover than Mana, it was a better source of energy than Mana.