The Reason the Main Character of That Book Became a Seme

"Do you think I'm an idiot? Not even recognizing my guide."

No. I think you really are an idiot.

Yeonwoo learns from reading a book given by his sister Yeonhwa that she will die. C-class psychic Han Yeonwoo enters a dungeon to save Yeonhwa, saves S-class psychic Kang Chahun (the main character of the book), and dies.

Or so he dreams.

[How cute. Did you really think that was just a dream?]

But it turns out that wasn't a dream.

Realizing he's returned to the past, Yeonwoo struggles to change the future. While Yeonwoo is fighting this difficult battle, the oblivious Kang Chahun sees the kind Yeonwoo and stretches out his legs, looking for a place to lie down.

Well... becoming friends with Kang Chahun, the main character of the book, was fine up to that point...

But after going berserk, Kang Chahun became a little strange.

"Take your hands off my guide, you bastard."

Why am I your guide?