After doing some tests, Billy frowned since that tactic wasn't turning into a skill. That would have made things a lot easier… In any case, he learned a few things during those tests. First of all, the mana didn't do anything even though the concentrations were high and close to his skin and clothes. Another thing that he learned was that he didn't have to keep too much focus when he wasn't sending his mana to his back. However, when he used his mana to do something else, the mana on his back would become hard to control, as if it was itching to be absorbed since Billy's mana pool wasn't full. It was almost looked like that had a will on its own, but it didn't seem harmful...
In any case, on the first day, Billy stored around fifty hundred points of mana, and he didn't notice anything weird when he woke up on the next day. However, his wives saw a small blue point on his back, and both of them could feel the mana inside it.
