Aesir's already spent 120 years of his new life as a high elf living the lackadaisical lifestyle one would expect from him. It's about all he can take. With much more time than he knows what to do with, he decides to set off and explore the world he's spent a century in and still knows nothing about.

Suzuka Nagami is a beautiful third-year middle school student who has excellent grades and is the student council president. She wrote a novel about a little sister who dotes on her older brother, and the the novel wins a light novel award. After they discuss the matter, Yuu is the one who debuts as a proxy light novel author instead of Suzuka, under the pen name Chikai Towano.