Strange Black liquid

Evan opened the box and was taken aback when he saw there was only one core in the box.

He felt a little disappointed, but suddenly felt the core was different than the cores he got earlier.

When he lifted the core and looked at it carefully his eyes opened wide.

"B+ rank core" Evan muttered with a shocked look on his face.

A C+ rank core has energy that is comparable to two C rank cores. While a B rank core has energy comparable to three C+ rank cores.

And a B+ rank core has energy comparable to two B rank cores.

If Evan converts the energy of this B+ rank core it is comparable to twelve C rank cores.

In total, he got twelve C rank cores, three C+ rank cores, and one B+ rank core from these two boxes.

All of these cores are comparable to thirty C rank cores.

Evan already had seven cores that he got from Valery.