—Who are you? — when Hiraga Saito woke up, a beautiful girl was peering into his face. When he looked around, he discovered that he was in a completely unknown place, and he and this stranger were surrounded by guys in clothes reminiscent of wizard costumes. It seems that this girl named Louise summoned Saito as a familiar to another world. To the boy, who was confused, not understanding the meaning of what was happening, Louise said: “This is a conclusion of a contract,” and unexpectedly kissed him. Saito is furious: "My first kiss!" - however, soon strange runes appear on the back of his hand, and he finally becomes a familiar. Involuntarily living with Louise, he decides to look for a way to return to his home world, however... A comedy work that tells about Saito's life as a familiar!