Lil'Pri's teacher, Tarou Atsui, is very intense from the beginning and suggests "making something that will be the class’s trademark for tomorrow’s excursion". While none of his students pay much attention, he doesn't give up. His next suggestion is to stitch all of their handkerchiefs together to make a flag. However, all the students just leave their handkerchiefs and go home. Mr. Atsui stitches them together to make it more flag-like. When Leila comes back to school to get her forgotten thing, she decides to restitch them. But on the day of the excursion, she forgets the flag.