Summoning System in Magic Forbidden

When he woke up, he became the cousin of a certain arrogant girl and stayed at her house. A certain pervert: "!!! My sister in men's clothing♂!!!" A certain pick-up player: "You're a rich man, I accidentally threw my wallet into the river when I was buying eggs, and my bank card was swallowed when I was withdrawing money. Can you please lend me some money?" A certain random bomber: "Explosion is art. Let's go to heaven." A certain big boss: "A demolition maniac. I will fight with you!" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.