Aini (voiced by Sayuri Yahagi) is a princess born in the weak and poor country of Inako. In order to protect her homeland from being invaded and exploited by powerful other countries, Aini decided to go to Sirenfaren, where she signed a peace treaty with the military country of Milednia and the religious country of Sirenfaren. I thought it was just a simple journey, but I didn't expect that the stupid princes I met in Sirenfaren made Aini get into trouble. Narek (voiced by Kaito Ishikawa), who is often immersed in his own world, Vino (voiced by Yuichiro Umehara), who has a handsome appearance and tosses between different women, Luz (voiced by Souma Saito), who has a strong charm, and Meiya (voiced by Ryohei Kimura), who is elusive and stays at home, what kind of sparks will Aini collide with these princes?