My Civil Servant Life Reborn in the Strange World - Chapter 116.

Xiao Shan is a famously profligate prince, the kind that makes his emperor father angry just by being seen. Xiao Shan’s greatest wish in life is to be a salted fish who lives without any worldly strife, until his father bestows upon him Xie Zhui, a ger who has been mixing with men, to be his bride. Xie Zhui took his brother’s place in the army at fourteen, achieved great merits by successfully defending against enemies outside the northern border city at sixteen, and was discovered to be a ger after being seriously injured at eighteen. After returning to the capital, the emperor pardoned Xie Zhui’s crime of deceiving the monarch and bestowed him to Xiao Shan as his rightful spouse. Everyone says that Xiao Shan has married a ger who came out of a pile of men, with a vast grassland above his head. They think about how much the emperor must dislike Xiao Shan to have given him such a troublesome marriage.

Three years ago, in the land of Reinbulk, a Legendary Hero was summoned in the Kindom of Leezalion and he succeeded in repelling the Demon King. Now, five students are summoned back into Reinbulk by the Kingdom of Luxeria to fight against the Demon King and the demon army. Unlike the other heroes, Yashiro Yuu has no magical affinity and the Luxeria Kingdom has no intention on acknowledging his existence or returning him to his world.

This is a world shrouded in darkness, and the pervasive black mist erodes all living beings.

Only fire can dispel the darkness and protect mankind.

But the firewood will eventually run out, the fire will eventually go out, and humanity will eventually perish.

until Rhodes came.

- 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.