School is out for the summer, and Airi is off to Japan with her family to visit her grandparents and cousins for the first time in years. As fun as the trip will be, Airi is worried that her new friends will forget about her while she's gone. Will the stories she sends them from her vacation be exciting enough to keep them wanting more? Looks like it's time to pull some pranks and keep her friends--and her family--entertained!

But after some of her plans cause problems, Airi starts to question whether her supposedly fun ideas are actually worth it after all. Is being the prankmaster general all it's cracked up to be? In this latest Airi Sano adventure, Airi and her pranks are in for the trip of a lifetime!