Our Little Promise is a children's short story written by Priya Pasumarthy and illustrated by Maria Stoyanova. Billy visits Lilly's home on April Fool's Day. Lilly dresses up as a Messy Alligator, Brown bear, Grey Cat, Mighty Elephant, toothy Goldfish, Slimy Snail, Scary Shark in creative ways. Billy enjoys pranks and keeps up with the fun without feeling bad in any situations. After bidding farewell, Billy tells his mother about pranks and fun he had with Lilly. It is great to have friends and friendship. It is on us how well we can keep up our friendship.