I am trying to look for a book where the storyline is similar to “ [Quick Travel] Let's give birth to supporting roles.” but instead, I’m pretty sure the main character gives birth to the protagonist child I can remember one of the world he went into was the disaster life of Saiki K and he gets together with Saiki the main character of the anime, and has a child with a child, having the same power as saiki but less powerful that’s one of the worlds that I can remember but yeah if you know the story, please tell me the name.