My autobiography is definitely not a tragedy! - Chapter 179 - 150 The Whistleblower

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?

That night, she shed off the image of a young maiden’s immaturity, forming a ripple in the deepest parts of the Cold Palace…

That day, she kneeled before him begging for mercy. She didn’t want anything. She only wanted to leave the palace and become an ordinary girl….

A bunch of elegant and good looking heavenly princes. A lowly palace maid with a mind as calm as still water.

If they were to meet, would it be an encounter like dewdrops and the autumn wind or would it be a lament of a country…

- Description from Novelupdates

Liola—the best assassin in his world—has vowed to kill no more. He was being chased by an assassination organization when he accidentally dropped into a parallel universe: through a dimensional gate and into poor teenager Kaiser’s apartment. Instead of going to the government shelter for lost dimensional travelers, Liola and Kaiser wind up going to school together.

Liola has been trying his best to live the life of an ordinary person, but after certain things happen one after the other, he begins to realize that being an ordinary person could be harder than being an assassin.

Her ex-boyfriend was snatched by her step-sister. Not only that, she accidentally lost her virginity to him due to her step-sister’s schemes.She was nearly confined to her home until he came along. He rescued her from that nightmarish place, if that place can even be called a “home.”He, dashing and powerful, seems to have everything. Yet he suffers from an odd illness where he feels nauseated whenever a woman is within three meters of him. She, however, is an exception. From that fateful day on, their paths cross. He strives to win her heart, and she, too, starts to develop feelings for him.But as the story unfolds between the two, her ex-boyfriend’s growing mixed feelings and the appearance of his fiancée threaten to put an end to the budding love between them…