As for Mo Yi, he had mistaken the two worlds for parallel worlds and kept things very clearly separated. He knew that the Kishin before him was Alice's mother—his mother-in-law—and was different from the Madam Kishin he could make a move on in the other world.
So after listening to Madam Kishin recount what had happened, he did not say much. He only said that he had fallen into a trap Tsukuyomi had left on the Princess and been swept into a spacetime turbulence.
As for how to return to that parallel world, even Mo Yi had not thought of a concrete method. Telling others would only add to their worries.
Besides, Mo Yi could not exactly tell the Madam Kishin before him—
"Hey, Mother-in-law, I went to a parallel world before and hooked up with both you and your biological younger sister, Tsukuyomi."
If he said that, Mo Yi felt that before he even got to meet the boss Tsukuyomi, he would first have to battle Madam Kishin for three hundred rounds.
Of course, Mo Yi was overthinking it!
If he said it now, the more likely outcome was that an ecstatic Madam Kishin would pounce on him and fulfill her wish from years ago.
Because of Tsukuyomi, Kishin naturally could not make Alice with Mo Yi. She could not possibly learn from Mo Yi's other trashy father-in-law and give her second daughter the same name as her eldest daughter, could she?
Wouldn't that just be asking for trouble?
So she could only make Alice's younger sister or younger brother instead.
Of course, in terms of the outcome, there was not much difference. Mo Yi would merely be fighting Kishin in another way, and he might end up far more tired than if they had fought with their fists.