Kokichi and Shuichi are in the kindergarten. They are best friends, so they always spend time drawing, playing, and sleep together when it's nap time. The caretakers planned a sleepover for the kids, so they had to choose someone to sleep with.

It was finally the day of the sleepover. Kokichi ran on his little feet towards Shuichi. Both were already wearing their pajamas and holding their blankets.

"Shuichi! Let's sleep together!"