Gaku ☆ Ou -The Royal Seven Stars-

Hiroto is a prince from the Kingdom of Eleutheria on the small far-away planet of Fadenfrus. He was tired of spending his days in the royal palace and yearned for a school life like those on Earth, where his mother had once attended. His wish came true when he was allowed to attend Konoegahara Gakuen in Junesis, a country well known for its superior education system. However, the school only had 7 students (including himself) and was on the cusp of closure since it was being targeted by officials. He decided to oppose the country to save the school and protect the school life that he had longed for… but moreover, the ulterior motive for him being sent to Earth was to take over Junesis!

[From Hau~ Omochikaeri!]