Mana Realm? (edited)

Lillian closed her eyes, pulling herself in a meditative position. She then concentrated her thoughts around her Mana core. After a while, she felt her mind being pulled into it like it was stretching her body.

Moments later, she then opened her eyes once the feeling disappeared, finding herself in a blank world of nothing by skies and sea.

"So this is my Mana Realm..."

In everyone's Mana Core, there exists a sort of realm based on their existence. Their past, present, later on—their future. This is the place where most things related to a person's trait or element would mainly take place out of battle or use.

It is also the place where one can refine one's mana.

"Y'know... I expected a lot more in here..." Lillian tapped her chin, looking around before turning her head downward, discovering she was sitting on the surface of the sea. (3)

'But I guess it would become more once I form more shells around my core.'