"Boku no Natsuyasumi Portable: Mushimushi Hakase to Teppenyama no Himitsu!!" Sony Interactive Entertainment Price: - Startup confirmed. The instruction manual is missing, and the case has scratches. The back of the UMD case is relatively clean and has no openings. For those who purchase multiple items, we will offer a discount, so please read the profile. #Sony_Interactive_Entertainment #Game #Simulation #PlayStationPortable #PlayStation_Portable #PSP Thank you for viewing.