Ranger King of Azeroth - Chapter 107: Lonely star!

The male student, Fukai Nagamasa, ignores his studies for college entrance exams in favor of following the path to chuunibyou. As he fainted during night cramming session before the exams, he realized that he was transported to a parallel world as a feudal lord in the Sengoku Era. Not to mention that suddenly, he was marrying the sixth Demon King, Oda Nobunaga’s little sister, the one who was purported to be an unrivaled beauty?

Luo Lin Yuan was born delicate, with a big temper, a hard character, and a good face.

Yu Han is straight, good-tempered, and soft, and only sleeps three hours a day.

Yu Han didn’t want Luo Lin Yuan near him.

But Luo Lin Yuan wanted to be around him.

This is an innocent, sweet campus story in which Little Princess Luo went to great lengths to make friends.

Abstinent, Poor Gong x Obsessed with Cleanliness Little Princess Shou.

- Description from Novelupdates

In a world fractured by conflict and haunted by shadows of the past, Kokushibo—the first Upper Moon demon—meets his end, only to awaken in a new life. Reincarnated as Crimson, a child born into a different family, he carries the memories of a past he cannot escape. Burdened by centuries of guilt yet indifferent to the present, he resigns himself to duty—until an unexpected bond with his newfound family begins to thaw his hardened heart. As he struggles between the weight of his past and the weight of the new life, Crimson must decide whether he will remain shackled to his former sins or embrace the possibility of peace.