16位：Aria the Scarlet Ammo

出典 : Amazon.co.jp

This action and love comedy has been published by Chugaku Akamatsu-sensei from MF Bunko J since 2008.
It is illustrated by Mr. Kobuichi.
Set in a world where the armed detective “Bu-Connaissance” has taken root, the story follows the harem and excruciating days of Kinji Tohyama (Tohyama Kinji), who is caught in the middle of a conflict following his encounter with Kanzaki H. Aria (Kanzaki Homuzu Aria), the great-grandson of the famous detective Sherlock Holmes.

As of October 2019, 31 volumes of this volume plus one extra volume are currently being published.
The spin-off manga “Aria of Scarlet Aria AA” has also been popular, with the series’ total circulation exceeding 8.5 million copies.
The main story and AA were made into a TV anime in 2011 and 2015, respectively.

15位：Mayfly Days

出典 : Amazon.co.jp

This is a light novel written by Jin (Nature’s Enemy P) himself as one of the pillars of his multimedia project, The Mayfly Project.
It is illustrated by Shizu-sensei.
A total of 8 volumes of the book have been published by KCG Bunko.

It is an ensemble drama based on a VOCALOID original song of the same name, and describes the activities of “MechaKsi-Dan”, a group of boys and girls who have supernatural powers.
It is a big hit series that sold 9 million copies of the novel alone.

14位：Blessing this wonderful world

出典 : Amazon.co.jp

This is an inter-world reincarnation fantasy published by Natsume Akatsuki from Kadokawa Sneakers Bunko, starting in 2013.
It is illustrated by Kurone Mishima-sensei.
As of October 2019, it has been published to volume 16.

It is a slow life style slapstick adventure tale in which the main character Kazuma, who died in vain in this world, is reincarnated in an alternate world with an RPG-like world, where he spends his days with bad goddesses, bombastic wizards, and domesticated lady swordsmen, whether he is going to defeat the demon king or not.
When it was made into an anime in 2016, it was a big hit, and after that it was made for two seasons, and even the movie became a hit, and the original series sold more than 9 million copies.

13位：After all my youth romantic comedy is wrong.

出典 : Amazon.co.jp

A school romantic comedy by Wataru Watari has been published by Gaga Bunko since 2011.
It is illustrated by Ponkan⑧-sensei.
Thirteen volumes of the main story plus three short stories will be published, and the series will finally conclude with the 14th volume, which will be released on November 19, 2019.

This coming-of-age story depicts the love triangle between the three members of the service club: Hachiman Hikigaya (Hachiman), who is always oblique and leads a twisted life; Yukino Yukino (Yukino Yukinoshita), who cannot fit in with her surroundings due to her uncompromising way of life; and Yui (Yui Yui Yuigahama), who is always reading the air and cannot express herself.
This work, which depicts the emotional expression of each character with sensitivity and boldness, has exploded in popularity and has sold a total of 9 million copies, which is unusual for a light novel romantic comedy.
It has been made into an anime for TV since 2013, and the third season is currently in production.

12位：Record of Lodoss War

出典 : Amazon.co.jp

This is a fantasy novel by Ryo Mizuno, whose publication began in 1988.
Set on the cursed island of Rhodes, it is an epic tale of adventure and battle between the heroes, including the main character Pern.
It was published by Kadokawa Bunko and Kadokawa Sneaker Bunko in the days when the word “light novel” was not yet used, and it has had a great influence on later fantasy works, so it is treated as a light novel.

The series covers a wide range of works, with the main story “The Legend of Rhodes Island” in seven volumes (with a new edition), the prequel “The Legend of Rhodes Island” in six volumes, the sequel “The New Rhodes Island Wars” in seven volumes, “Rhodes Island Wars” in one volume, and the short stories “The Forest of High Elves: The Tale of Diedrit” and “The Knight in Black”.
The main story (including the new edition) and the short stories are illustrated by Mr. Hiroshi Idebuchi, “The Legend of Rhodes” by Mr. Akihiro Yamada, “The New Record of Lodoss Wars” by Mr. Haruhiko Mikimoto, “The Record of Lodoss Wars: The Crown of Pledges” by Mr. Hidari, and the paperback edition of “The Knight in Black” by Mr. Masato Natsumoto.

The series has sold over 10 million copies in total.

11位：Fortune Quest

出典 : Amazon.co.jp

The book has been published by Mishio Fukazawa since 1989 by Kadokawa Sneaker Library and Dengeki Library.
The illustrations are by Natsumi Mukai.
As of October 2019, there are 37 volumes of the main story plus 7 volumes of the outer story published.

It’s an epic fantasy about the various adventures of Pastel, a poet and mapper, and a group of adventurers, including a group of adventurers, and the human condition.
It can be considered the original light adventure story for men and women, and was popular with a wide range of readers, both men and women, and became a very long-running series that sold a total of 10 million copies.
It was also made into an anime for TV from 1997 to 1998.

10位：Shakugan no Shana

出典 : Amazon.co.jp

It is a novel of unusual ability battle published by Yashichirou Takahashi Sensei from 2002-2012 from Dengeki Bunko.
The illustrations are by Noizi Itou.
It is a love story about a girl who is a member of the Flame Haze, who searches for and defeats the ‘Redeemer’, a people of the other world who eats the power of human existence without knowing it, and Yuji Sakai, who named her ‘Shana’, are attracted to each other through their joint struggle.

It is a huge hit with a total of 26 volumes of 22 volumes and 4 short stories, and the series has sold a total of 10.8 million copies.
Since 2005, 3 TV anime seasons, 1 film animation, and 2 OVA series have been produced, and it has become a popular work that has helped to popularize the late night anime based on light novel.

9位：Fullmetal panic!

出典 : Amazon.co.jp

This is a science fiction military action book published by Shoji Gato from 1998-2011 by Fujimi Fantasia Library.
The illustrations are by Douji Shiki.
It is a popular manga about Sosuke Sagara, a member of the anti-terrorist military organization “Mithril”, and Chidori Kaname, a psychic called “Whispered”. 12 volumes of this work, 9 volumes of short stories, and 2 volumes of extra stories were published.

It became a mega-hit, unusual for a light novel with robots, and the total number of copies of the series reached 11 million.
It has been made into an anime for television four times since 2002.