Brighter than the Dawning Blue English Dub

Mia is Feena's main escort from the Kingdom of Sphere and always tries to look out for the princess. More or less, she is a maid who serves the princess but does not always do what she is told. She is a bit of an airhead, though all of her efforts are genuinely for Feena's well being and happiness.

Natsuki is one of Tatsuya's closest friends and is also one of his classmates. She works with Tatsuya at her father's restaurant, Trattoria Samon, which also happens to be next door to Tatsuya's house. She often gets angry at Tatsuya or her brother when they tease her. She is best known as the Carbon Master, due to her inability to cook and all her attempts ending up as blackened messes, (including salad).

Tatsuya and Mai refer to her as their older sister, although she is actually their cousin.In the anime, Sayaka is the primary secretary to the president of the united nations so she has a lot of ties with the politics that is involved between Earth and the Kingdom of Sphere. Her nickname in the media is the "President's Dagger".

A mysterious being from the moon, Wreathlit, generally known as Wreath, appears to be a young child but is actually much older. She is constantly watching Feena, especially in Feena's story path where she is in love with Tatsuya; her split personality, Lady Fiacca, tells her that the Moon and Earth must not be united. However, in the end, Fiacca departs forever after seeing the result Tatsuya and Feena's efforts and breaking the cycle of hatred between the two worlds.

Midori is an energetic girl in Tatsuya's class who has been one of his classmates since their first year in high school. She is the clarinet leader in the concert band at her school. She seems to be very desperate for Tatsuya's odd sign of affection or even perhaps noticing her once in a while. She is only available as a love interest in the PS2 and PSP versions of the game, and is otherwise a minor character.

Jin is Natsuki's older brother and is also one of her co-workers at the restaurant that their father owns. He constantly makes his sister angry when at work which gets him thrown out of the restaurant, usually breaking a window on the way out. Everything he breaks due to this act is taken out of his paycheck.

Karen is the Military Ambassador of the Kingdom of Sphere. She seems to have a fairly strict attitude on things which fits her profession well.

The main chef and owner of Trattoria Samon, the restaurant where Samon and his two children, Natsuki and Jin, work. He tends to be a fair boss to his employees who do not have a problem with him as their boss. Samon admires Takeshi Takano's work as a photographer and even was able to get his autograph in the first episode of the anime.

Tatsuya's father. He is a traveling archaeologist, who spends months at a time traveling. Many times, the children do not see him at home for months. In the anime, he is portrayed as an Indiana Jones look alike.