Aldo "A young Summon Beast raised among humans and Kascuza." Main character (male). Race: Summon Beast A Summon Beast who loves listening to the wind. Years ago, he was summoned from another world when Reiha's powers went out of control. He now lives with the Kascuza along with her, and Aldo thinks of Reiha as his sister. His favorite food is Reiha's special Banna Cake. In battle, he is a good close-range fighter using melee weapons.
Reiha "The girl who loves Banna Fruit." Main character (female). Race: Human A cheerful, responsible girl. She loves gardening and cooking, especially with Banna Fruit. She lost her family at a very young age when she lost control of her Summoning powers. She now lives on the Kascuza island with Aldo, the result of that haywire Summoning. She uses a mixture of Summoner spells and Kascuza Spirit magic to create a style of spellcasting all her own.
Nassau "A Kascuza who calls the storms." Race: Kascuza Nassau is a young man who is a prominent figure among the Kascuza. He looks out for Aldo and Reiha and has a caring, if somewhat informal, personality. While Reiha is one of his closest friends, he hates Summoners because of the way they treat the Kascuza. Nassau takes great enthusiasm in using his axe in battle, and he can cast some wind Spirit magic.
Ayn "The Priestess Princess of the Kascuza." Race: Kascuza The priestess in the Kascuza village. Ayn has been groomed to be the next priestess since she was very small, and so she hasn't had a normal childhood. She's a happy and innocent little girl, but she know that she shoulders a serious responsibility to her people. She is a Spirit user who uses water Spirit magic.
Mardin "A former master Summoner whose abilities have been sealed." Race: Human A friend of Reiha's father. He is the person who brought Aldo and Reiha to the Kascuza village after the accident that summoned Aldo and killed Reiha's father. Mardin was once a powerful Summoner, but after the incident, his powers were sealed by the Summoner ruling council. Calm, cool, and collected, Mardin always thinks things out and brings reason to every situation. He is a powerful martial artist, and uses Chi to cast magic.
Ticah "An apprentice Summoner who works at a research facility." Race: Human An apprentice Summoner, born into a family of elite Summoners. She works at one of the research facilities studying Summoning. While she does care about the main characters, her motives are somewhat darker; she has been ordered to follow and observe Aldo and Reiha, and Ticah tries to hide this fact from the others while she travels with them. Despite this, she really is a kind-hearted girl. She uses a bow and arrow to make long-distance attacks.
Lila "The Summoner beauty who works too hard." Race: Human A beautiful Summoner who is investigating events in the Summoner research facilities. She is quite serious and is a hard worker. Her family was not well-off when she was growing up, and she has spent her life working to become one of the top Summoners. Her abilities are great, and she takes great pride in herself and her efforts to gain them. She does have a softer side, which is only rarely seen, even by people she trusts. Lila is a powerful Summoner, and she is also a superb fighter with her spear.
Millisar "A Summon Beast freed from a research facility." Race: Summon Beast A Summon Beast who had been held captive in a Summoner research facility. His time in the facility has left him emotionally scarred, and he is very hesitant to trust people. He has trouble making friends and expressing his honest feelings. He uses a unique Summoning magic.
Phicra "The leader of the movement to rescue the Summon Beasts." Race: Summon Beast A Summon Beast who had been held captive in a Summoner research facility. An unknown person freed her, and she has dedicated herself to freeing her fellow Summon Beasts from the other facilities around the world. She can control the Spirits with her will, and uses powerful offensive magic.
Ghardib "A fierce Summon Beast who hungers for battle." Race: Summon Beast A fierce Summon Beast for whom violence is the first, last, and preferred option to solving any problem. He had been held captive in a Summoner research facility, but was freed by Phicra. Ghardib has a passionate hatred for humans. He has some magical ability, but most of his attacks come from his own immense physical strength.
Agneah "A capricious and cruel Summon Beast girl." Race: Summon Beast A mischevious Summon Beast who can also be very cruel. See had been held captive in a Summoner research facility, but was freed by Phicra. She loves flashy and cool-looking things. She uses physcal attacks in battle.
Ingiell "The compassionate elder of the Kascuzas." Race: Kascuza An elder in the Kascuza village and Nassau's grandfather. Ingiell was once a competent physical fighter like his grandson, but as he got older he became a leader in the Kascuza church and learned to rely on the Spirits for magic in battle. He is patient and compassionate, and although he is a strict teacher, he can still be very kind. He has a streak of stubbornness, especially when talking about Ayn or the Shrine.
Zarahm "An arrogant elite Summoner." Race: Human A very arrogant Summoner from the elite of Summoner society. He comes from a family of Summoners once known for their great power, and he is Ticah's uncle. His great Summoning abilities have earned him a place as a lead researcher in the Summoner facilities. He tends to judge people based on their social classes, and is uptight about everything.
Talij "The Summoner Magistrate." Race: Human She holds the position of "Summoner Magistrate," the leader of the Summoners. Her current priority is to investigate a series of bizarre accidents occurring in the Summoner research facilities. Cool and capable, she is not affected by her emotions at all. She is a stern leader, and her subordinates look up to her and fear her in equal measure.
Arlus "A "hero" in golden armor." Race: Human A Summoner with a very cheerful disposition. Talij has ordered him to try to figure out the mystery behind the escaping Summon Beasts. He wants to be known as a hero, but the people around him think of him as a buffoon. Arlus can be serious, but he tends to be irresponsible and takes everything lightly.