Origin
Altia
Airy generally takes on the form of a young female fairy. Like all other spirits, they are beings to be considered to be above humans and dragons themselves. They cannot be seen through the naked eye, nor their voices are heard by regular humans unless they are of high magical aptitude. Her relationship with Taichi was already reached before his summoning due to his pre-discovered magic capacity. Before Taichi's awakening as a summoner, she maintains telepathic communication with Taichi until being cornered by Cassim's Red Wolf where she briefly lends Taichi her power. It wasn't until Anastasia's death that Taichi acknowledges his unique power and formally pact a contract with Airy.

Isekai Cheat Magician
As regular high school students Taichi and Rin disappeared in a beam of light. When they came to, the two of them were already in a world of swords and magic. Finally getting away after experiencing an attack by monsters, following the suggestion of adventurers they headed on the path towards the guild. In the guild, the two of them found out that they possessed unbelievably powerful magic. Thus the regular high school students transformed into the strongest cheats...