~ Comet is the fifth novel in the Earth series, published in May 2018. This novel still continues the story of the adventures and journeys of the three friends, namely Ali, Raib, and Seli. The three of them found an island with various strange plants.

The island has a name based on the name of the day, starting from Monday, Tuesday, Wednesday, to Sunday. There, too, they met people with the same face, but different names on each island. Weird isn't it?