After a moment of contemplation, Henry finally made a decision.
In the skills that he possessed, those that he wanted to upgrade included power surge, duplication, fusion, subordinate function, false regeneration, injury immunity, damage distribution, and power pool.
That was a total of eight skills that he possessed. But still, he could only upgrade one of them. Henry contemplated for a moment before finally making a decision.
He decided not to select power surge. The reason behind that was simply because it increased his damage by three times at the expense of half of the energy in his body with a cooldown of 1 hour.
Power pool was a skill with the same function as power surge. So, he could simply use power pool, before activating power surge. That way, he would be able to deal a lot more damage than usual.