Jun gets the pendulum title by Saki who is the creator directly, because Jun is the first person who managed to live and mediate that world. But, if we keep looking for someone whose whereabouts are uncertain, we can't feel the beauty of life, that's what Jun told Saki at that time.
Saki can also live in real life and have a physical body in that world.
Jun's thoughts finally gave birth to a new idea for Saki, which is what if she created a pawn that came from her imagination? A kind of human with various races, plants, and animals. In the alternate world he had built this could be real.
Jun agrees, then a blank book stored in Jun's calligraphy club contains pictures of some of Saki's characters. Slowly the characters depicted every day disappeared and began to fill the alternate world.
