A change in class

[You have acquired 'Black Heart'. Do you want to use it?]

Shikamaru hesitated at first, but then he realized this was the result of power beyond imagination. If such a power wanted to mess with him, he couldn't do anything.

"Yes."

Suddenly a sharp pain hit his nerves. It appeared on the chest, then travelled throughout his body. Shikamaru wanted to scream, but before he could open his mouth the pain disappeared. He quickly checked his body and noticed a difference.

There was one more heart beating away within the right side of his chest. He felt powerful surges of chakra ceaselessly flowing out from this new heart.

A lot of messages popped up:

[Your Class has been upgraded from ‘Ninja’ to ‘Shadow Monarch’.]

[You have acquired Class-specific skills.]

[You have acquired bonus Stats.]