The Legendary Janitor
Most people don't choose reincarnation. Reincarnation finds their way to them. Perhaps they did something great in their life. Or maybe truck-sama wasn't looking where it was going. But without fail, those who reincarnate are destined for something great. A new life where everything changes for the better. But... Reincarnation isn't always the greatest thing. Sometimes you just draw the short end of the stick. Di Tou just happens to have drawn the shortest stick. Pulled out of his life randomly. Taken by a crazy old eccentric man not as a disciple, but as a body double?! And a janitor body double no less?! Grasping a system to find... It's a JANITOR SYSTEM!? Truly, how unlucky can one get?
Spirit Axe
Thus, the crux of the summoning spells was never the difficulty in learning how to use the various elements. That came rather naturally as long as once could conceptualize it correctly, and with Di Tou's above average Spiritual Sense, he had been able to successfully summon elements after just three tries. Rather, it was familiarizing oneself with using their Spiritual Sense in a myriad of ways, and to create fluid motions with it. Summoning water from one's hand was different from summoning it across the room, and that was again different from summoning boiling water.