Love Live! School Idol Diary is a series of novels in the Love Live! franchise, written by Kimino Sakurako and illustrated by Otono Natsu and Akame Kiyose with character designs from Murota Yuuhei. There are currently thirteen novels, split into two series:

- Each of the first nine volumes retells parts of the Love Live! anime series story from a different idol's point of view along with their backstories.
- Each subsequent volume of the second series talks about an event within the school year, and is each told from two different idols' point of view. These volumes also contained codes for SR cards of their featured characters for Love Live! School idol festival (JP), in the same poses as drawn on the book cover.

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While struggling with a grandmother who's starting to forget him and a family who already have forgotten him, middle school student Sakamoto Toki meets substitute art teacher Itsuya Tsuruda and her housemate, Kon. Itsuya-san has no artistic skill whatsoever, but she does have a different kind of ability...

From MangaHelpers:

One of the surveillance ships of the company Ferret went missing for some time. Once the ship was found, all 115 members aboard the ship were completely missing. No trace of their existence was found aboard the ship.

Masato's sister works for Ferret, and he was tasked to bring her supplies for the upcoming work to investigate this mysterious ship that returned without her crew. He meets a beautiful girl named Uto at the company, who also had a brother that worked for Ferret and went missing inside the ship. Now Masato and Uto must embark on a mission to discover the mysteries of the unknown island where the missing crew has been left. [DrCoke]

A collection of short stories which feature the mystery of human beings with a seemingly surreal yet pure literature-like style.

This 4-koma tells the story of Kurihara Nagisa, a high-school girl who loves eating and cooking. Together with her friends Kanako and Chiaki, the three girls bond over recipes and delicious food.

From MangaHelpers:
Muto Yuzuki was ready for a whole new life and a different self when she got to middle school but she didn't expect it to be literally torturous. Yuzuki is “persuaded” by an upper classman named Funaki Aoi to join the Torture Club on campus which has been secretly training students to enter the field of military and police organizations as interrogation experts. Aoi sees something inside Yuzuki and thinks she might be a prodigy in torture methods. Naturally, Yuzuki wants nothing to do with such vulgar conduct but the more she spends time with the club, the more she starts to realize her own dark potential.

From MangaHelpers:

This manga is based on the cell-phone rpg of the same name. Two children, Kiriru and Ignato, are born to a life of fighting. Their mother hopes that they will not end up having to fight alone. As a teenager, Kiriru does not like his assigned destiny, but he must fight monsters or many other people will die. Will he accept his fate, and will he ever find a partner? [tethysdust]

A collection of short stories.

V.1 - Ano Hito no Trumpet
1. Akahana
2. Oyaji no Oyaji
3. Kazumi to Genkotsu
4. Masami
5. Sensei, Ogenki Desu ka!
6. Chiba-ken no Sora
7. Enma-sensei
8. Ano Hito no Trumpet

V.2 - Hoshi Furu Yoru ni
1. Hoshi Furu Yoru ni (The Night the Stars Fall)
2. Summer Christmas
3. Gin to Gon
4. Jinan no Blues
5-8. Gamera 35

V.3 - Mae e...!!
1. Ashita e no Tee Shot
2. Bunker Shot
3. Kuro Mamushi
4. Tackle Daishou
5. Warawazu Onihei
6. Utteyo Chuu-chan! (Yakan Chuugaku Hen)
7. Mugi - Icchokusen

From FoOlRulez:

Hiraga Saito was summoned to the wonderful world of Halkeginia through the use of magic. He was summoned by the very cute, yet with "Zero" magical ability, Louise. Although it was an accident, Saito was summoned during the summoning ceremony, and sealed the agreement to become Louise's "Familiar" through a kiss. That is how he arrived in this world.

While on the way to visit the Princess of Tristain for her upcoming marriage to the King of Germania, war broke out. Because of the upcoming marriage, Conquista joined forces with Albion, declared war and began their invasion of Tristain. While drowning in despair over the disparity in military strength, Louise, by chance, got on board the Zero Fighter piloted by Saito. Her ability to use the legendary magic lineage "Void" awoke and she single-handedly ensured the triumph of Tristain over the army of Albion. And so we continue on from there to their next scene of battle.

A twisted old man, gifted with extrasensory powers, silently holds sway over an entire block of apartments. The occupants are puppets for him to control. Life is his to give...and to take. But suddenly there is a new voice in his head, and before he knows it, a young girl with her own battery of psychic abilities has arrived to challenge him! Soon, the sprawling complex becomes a battleground between two minds possessing incredible, unimaginable power.
Note: Won the 15th Seiun Award for Best Comic (1984).

Aritake Deigo has decided to move out and go live on his own no matter the cost. The reason for this is that he can no longer stand living with his family anymore. All he wants is to find a place to live a miserly life of self-loathing. While talking to an apartment agent, he encounters a strange blue-haired girl carrying a snake statue. When he starts hearing a faint voice come from the statue, he grows curious and touches it. A blinding flash of light ensues and he loses consciousness. Upon waking up, he finds out that he has been possessed by Lyssa, the Goddess of Madness. As a result, if he doesn't live a life of happiness, he will be taken over by the Goddess of Madness and die!

The Premise is a story about the moral contradictions and ethical dilemmas that arise when two policemen discover a criminal gang, commonly known as “The Executioners Sect”, which wants to enforce justice through a horrible method.

An alien species wanted to start a revolution against their oppressors, and they think they may have found the power in humanity to accomplish their goals. They discovered that humans have latent superpowers, and so they began to abduct them and awaken their abilities. Unfortunately, the humans' abilities were not very useful for their purposes---at least not until they found the destructive power of #214.
#214 is actually a young woman named Hoshi Yumako, who has no interest at all in the aliens' revolution. The abduction and powers have seriously screwed up her life, and all she wants is to be able to live a normal life. Pursued by the aliens, she tries to work part-time and keep her powers from ruining everything. However, she knows she's not the only one out there; she might find allies among the empowered rejects of the aliens' experiments.

Momo Sakura, 22, lives alone in Tokyo. His profession: she is the Rose Momoider and is part of the Secret Squadron Momoider, a group of super sentai heroines! Unfortunately, the little girl is clumsy and transforms its tasks in real fiascos ...

A collection of short stories.

From MangaHelpers:
The end of the civil war signaled the start of the industrial revolution in the United States and immigrants from all over the world traveled to find their American dream. But what awaited the majority of them was poverty, discrimination, and hopelessness. Manhattan, New York was full of immigrants flooding through the ports and the 6th district, Five Points, was considered at the time, the world’s worst slum. The mobsters corrupted the entire area, including the police by paying them off; Five Points was the mob's territory and they were the law.
But even Five Points, where there seemed to be nothing but robbery, prostitution, and murder, showed some signs of hope. Luke Burns was an honest and righteous teenager who realized that the mob was the cause of their harsh lifestyle and that joining the mobsters would not bring him the American dream. But his older brother, Brad Burns, had become an assassin for the biggest mob group of Five Points, the Grave Diggers, a secret he kept from Luke for his own protection. Brad was known as the Grim Reaper and his reputation preceded him as a ruthless and skilled killer.

Living in the boonies, one must give great consideration to how they will get around when they turn 16. Isaki has just turned 16 and his choice of transportation is his neighbor's Piper Cub. It might be old, but it flies well, and so...

When the national idol Kusakabe Yuka suddenly retired from the entertainment business, it shocked the world and it devastated teenager Hata Kosaku. Kosaku was Yuka's biggest fan and her departure left him depressed. His classmates at the Tamo Agriculture School finally are able to get him to leave his room and attend his class, but to everyone's amazement, Kusakabe Yuka (her stage name) comes into the class under the name Kinoshita Ringo as a transfer student. Kosaku realizes he has the once in a lifetime opportunity to get to personally know his dream girl and, together with his group of friends, try to find out why she is here and become closer than just classmates.

A high school boy named Kōichi Madanbashi who has Hi-ERo particles, the power source to operate the robotic weapon Daimidaler. With the help of Kyōko Sonan from the mysterious Prince Beauty Parlor organization, he stands up against the Penguin Empire that troubles humanity.