Since his fondness with Kelly had reached 100, Andrew could call Kelly one hour a day without pay.
One hour later, if he still wanted Kelly to stay, he could also do it.
That was to make Andrew consume his magic power to extend her time.
And the specific length of the time depended on how Kelly would do.
If he just walked and ate, the consumption would be much less, and 10% magic power would be consumed in an hour.
If it was a battle, it would consume a lot.
If Kelly went all out to fight, it would only take 10 minutes for her to drain all of Andrew's magic power.
But there was a place for her to operate.
Andrew didn't need to call her for free. He could use magic power to make Kelly appear.
When they needed to fight, she would show up without pay.
And the preliminary magic power recovery liquid could help the user to fully recover magic power within one hour, which lasted for an hour.