Light Novel Paperback Size Welcome to 『 Kumanekotei 』, one day strange world! / Karasuma Shimei Cosmic library alpha

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My brother and sister, who were summoned to a different world, decided to open a set meal restaurant? What happened! I was supposed to be in 『 Kumanekotei 』! One day, Junashi, who works at 『 Kumanekotei 』, a set meal restaurant run by his older brother, is forcibly summoned by a prince of a different world. He seems to have used magic to improve his diet in order to borrow the power of this world. At first, Junashi was reluctant to cook, but later, he invited his older brother to open a set meal restaurant in a different world?