This is a story about the Solar System within the Milky Way Galaxy. The Solar System consists of what are called Solar System Planets in the Milky Way, with planets revolving around the Sun.

Galileo Academy — commonly known as Galileo Junior and Senior High School.

An academy attended by the planets and moons of the Solar System. Looking out into space, stars shine even during the day. It is famous for being able to see the galaxy at night.

That Galileo Academy actually has a hidden secret

Galileo District A district (town) called Galileo. Medical care, sanitation, environment, electricity, and water are mostly available. The environment is similar to modern-day Japan. It is incredibly huge, roughly the same size as Kyushu, Japan.

Galileo Hospital A hospital in the Galileo District. Basically has everything. The doctors are stars

Towns within the Galileo District (?)

Galleria Area roughly the same as Fukuoka Prefecture, Japan. The most urban area.

Interra Area roughly the same as Saga Prefecture, Japan. Has little more than rice fields and houses.

Gria Area roughly the same as Nagasaki Prefecture, Japan. Rich in nature with many ponds.

Ren Area roughly the same as Kagoshima Prefecture, Japan. Has many volcanoes, but they are small.

Koria Area roughly the same as Miyazaki Prefecture, Japan. A place with thriving industry.

Lacari Area roughly the same as Kumamoto Prefecture, Japan. Many mountains; extremely cold in winter but cool even in summer.

Linra Area roughly the same as Oita Prefecture, Japan. A place where the fishing industry thrives.

Sirenara Islands Islands of Gria. Features coral reefs.

Yarata Islands Islands of Gria. Covered in sugarcane.

Toria Islands Islands of Gria. Despite being islands, industry is thriving.

Asara Islands Islands of Gria. Famous for fine-grained salt!

Mount Licon A volcano in Ren. Has only erupted twice in the past; since eruptions are rare, it is famous for mountain climbing.

Mount Calirea A volcano in Ren. The most dangerous volcano, but less hazardous than Japan's Mount Fuji or Mount Aso. The paths are rugged, so it is not highly recommended.

Galileo Specialties Salt, Groon-kai, Coral reefs.

Groon-kai A round fruit colored red and green. It is very sweet and has a refreshing taste. Rich in nutrients. It is encased in a shell, and the shell can be crushed into seasoning. Mainly produced in Interra.

Contains 10 to 30 seeds. The seeds are recommended as a crunchy snack when dried.

Rou-shu Liquor made from Groon-kai. It has a high alcohol content and is easy to get drunk on, but from a human perspective, it is gentle on the liver.

Mainly produced in Koria and famous in Lacari.

Laws Article 1: Interfering with a planet's orbital period or trajectory constitutes the Crime of Planetary Public Nuisance. Article 2: Use of Groon-kai other than for legal purposes constitutes the Crime of Illegal Use. Article 3: Insulting the specialties of Interra constitutes the Crime of Specialty Defamation. Article 4: Destruction of nature or the environment in the volcanoes of Leo and the nature of Gria constitutes the Crime of Environmental Destruction. Article 5: Taking coral reefs from the Sirenara Islands without permission constitutes the Crime of Nature Destruction and Unauthorized Theft.

There are Articles 6 through 865, and the rest are roughly the same as Japanese legal rules, such as the crime of assault.