I'm the Mysterious Leader of the Salvation Organization - Chapter 441:

“Any who don the title of 'king' or anything of the sort in my presence is nothing more than an ignorant fool. This is my land and I shall be reclaiming it soon. I am Cacophony, the Vampire Empress!”As those words left her lips, every cell in my body reacted. It was unreal—no, it was otherworldly. Her beauty, her power, and her overwhelming arrogance. It might've been then that I realized that my normal life had ended.How did it come to this?Ah, it was curiosity. Yes, a deathly curiosity brought me to that graveyard that day.It was there that I stumbled upon her coffin. I had absolutely no clue what I was doing then, and even now I have no idea what possessed me to touch it—that single moment changed the course of history for the entire world. I found myself delving into a completely unknown world.Should I regret it? Maybe. But the truth is, I don't.Exploring the world’s hidden secrets, forging unexpected bonds, and living alongside the revived empress—it’s exciting.“Even if it's wrong, I think I'm going to enjoy every moment of it.”

Du Fei was reborn, and in this difficult era of extreme shortage of supplies, he started his wonderful life of opening and hanging…

- Description from novelbuddy

Based on the popular Vocaloid song .

Rin, a young angel (presumed female, but angels don’t have clear genders) falls in love with a young human girl, Miku. However, their love is considered taboo, and so, Rin makes a deal with the devil to be reborn as the human boy, Len, in order to be with Miku. However, their happiness together is short-lived, and even that soon ends in tragedy.