Sergeant Keroro The Super Duper Movie 5: Creation! Ultimate Keroro, Wonder Space-Time Island

One day, a strange stone carving that looks just like Keroro shows up at Fuyumi’s house. To figure out what’s going on, the Keroro Squad heads to the remote and enigmatic Easter Island. There, they encounter friendly spirits called Mana, as well as the peculiar twins Io and Rana. But they also cross paths with Akuaku, a legendary evil spirit that has just woken up after centuries of slumber.