I traveled through hundreds of worlds at once

"Sister, slow down, you're walking too fast, wait for me"

At the intersection leading to Kansai University Affiliated School, a girl in a junior high school uniform, holding the hand of a little boy in an elementary school uniform, walked towards the elementary school gate with inexplicable excitement in her eyes.

The girl was walking in front with big strides, and the little boy who was being held behind could hardly keep up with the girl's pace, complaining with a bitter face.

"Jiro, you're walking too slowly. If you keep dawdling like this, you'll be late," the girl in the Kansai University Affiliated Junior High School uniform said with dissatisfaction, slowing down.

"How could I be late?"