Takuma was summoned to another world by the goddess Celia. It was only for a brief moment that he was excited by his delusion that the strongest savior saves another world? The one she summoned as a hero was the girl who always bullied him, Emiri Suzumori and he was summoned by mistake!

With the goal of returning to the world they lived in, Takuma decided to take an adventure against Celia and the Demon Lord. I wanted to refuse their adventures with Emily, but I couldn't survive on my own. I begged her to let me go back to my own world, since I didn't need to, but her powers were weakened by being sent to another world, so it was impossible.

To make matters worse, Celia was rubbing her cheeks against Emily, who boasted the strongest equipment and status, and now she's showing off her scumbagliness to relieve stress by bullying Takuma together. His role was to play the roles of a decoy to defeat the enemy monsters, as well as the dungeon inspectors.

One day, as usual, I was forced to search the cave ruins in the woods by myself. Takuma happened to discover a hidden room. There were stairs leading to the underground door, and when I arrived, there was a room that reminded me of a magic workshop. The old books were thrown away, and the walls were filled with letters written with infuriation and tenacity. Others were disappearing, but there were words like 'revenge' and 'unforgivable' written all over them. Then, there was a broken corpse lying next to it, and a book of grimoires lay beside the corpse. Takuma wanted to leave this creepy room as soon as possible, but I couldn't help but be curious about the existence of the grimoire. Based on my curiosity, I noticed that this corpse seemed to have been a great magus in the past, but for some reason, he was exiled from his country and led a secluded life. Then, with a desire for revenge, he secluded himself in the ruins and worked hard to develop magic. As I flipped through the pages, he made a surprising discovery.

"He who holds dark emotions, I am sure this will prove to be of great use." "I shall bestow my forbidden spell upon those who read this."

It contained the so-called "Manipulation" that he had devised. “With this, maybe...“ could it be...? he was half-convinced. But if he could really use the power of control, he could exact revenge on Emily and Celia, who had tormented him so much. Takuma's mind was filled with dark emotions, and he slipped the book into his pocket and left the room.

And then, from this day forward, the dark days of everyday life transformed into extremely obscene, pink days.