Fushigiboshi no Futagohime Gyu! is the sequel to Fushigiboshi no Futagohime.
Fushigiboshi no Futagohime Gyu! is the second series. In the second series, all the princes and princesses from the Mysterious Star leave to intend to the Royal Wonder Academy of Education. This school is a school for the princes and princesses from all the other planets come to recieve a certifcation to become kings and queens. Upon the arrival of this school, Fine's and Rein's unprincess like actions cause them to violate school regulations and lose points. During the orientations of first year students the vice president presents a legendary
bell that only rings when a certain person touches it. If the bell rings the person will be classied as the Universe Princess. No princess has ever rung the bell before but Fine and Rein rang it and they transformed. Stranged situations have also been occured in school. A dark entity comes out and forces everyone to become depressed. When someone resists the dark entity sends monsters that cause lots of damage. One of the first people to become possessed under this entity is Toma the new president of the student advisory.