Enjoy the adventure, and keep an eye on that looming shadow in episode 2!

The series opens with , an ordinary high‑schooler whose life is turned upside down when he accidentally activates an ancient, forbidden grimoire during a school field trip. The ritual summons a mischievous demon named Rin —the charismatic “Youma” (demon) of the hidden realm Nekrovia . Instead of destroying the world, Rin offers Kei a dangerous bargain: become the “Summoner’s Vessel” and join the Academia de Invocación , a secret school where humans and demons learn to coexist, battle, and harness arcane powers.

The first episode typically sets the stage for the series. If "Youma Shoukan e Youkoso" follows common anime tropes in its genre, viewers can expect a mix of comedy, action, and possibly heartfelt moments as the protagonist navigates their new life involving demons or spirits.

: Guests are first greeted by a receptionist named Maria before choosing a partner.