In the end, Hardt and Loar accepted Rain's offer… they had one less thing to worry about with that agreement. With that, Rain had the chance to test a bunch of other things. Before bringing people there to see what he was doing with the place, he used Hardt and Loar as test subjects. While keeping the pocket dimension active, Rain equipped the diligence path.
Rain also equipped the skills of the teacher's path that increased the wisdom and Intelligence of those around him, and then he began to teach them with Telepathy how to learn skills like Phoenix Rebirth and Bear's Stance, all in order to improve their physical skills. That was also part of a test to check if they could learn skills faster under the right conditions, and that worked.
"... I guess we can speed things up," Rain said while rubbing his chin thoughtfully. "I will teach you guys Limit Breaker, Magic Boost, and Scholar Insight."
