Novels by author Newt In The Well

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