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?
Wavering between the two, Di Tou couldn't help but let out a bitter smile. All of a sudden he rather understood the Marriage Monk who now only went by the name of Marriage Monk. Now that his mind was clearer, he could tell that the Marriage Monk should have been Wu Kong and BeiDou, who had… married? Or at least had some sort of symbiotic relationship.
Ultimately, although BeiDou was a unique Yin Body who had some sort of corporeal form in the mole, as a whole she still had no physical body of her own and had to share a body with Wu Kong. Together they were neither Wu Kong nor BeiDou, but instead the Marriage Monk.
The only thing was, for them it was a happy thing. It was a way for them to express their love, and could be considered a happy resolution in which BeiDou got to live on and a corporeal form of their Marriage, but for him where Di Tou and Pi LaShi met was hard to say.