An earlier works by Biblia Koshodou no Jiken Techou's author, Mikami En, this story starts with the younger of the Kishimoto siblings, Mizuho, getting a phone call from a man claiming to be a policeman, informing her of the siblings' father's hospitalization due to an accident. However, the man, whos injury was not life-threatening, suddenly began muttering— "Red eye, red eye, red eye, red eye, red eye, red eye, red eye, red eye, red eye, red eye, red eye, red eye, red eye, red eye, red eye, red eye, red eye, red eye, red eye, red eye, red eye, red eye, red eye, red eye, red eye, red eye, red eye, red eye, red eye…" Spilling out few more words, the man started coughing intensely, and suddenly dropped dead.

The kingdom's hero, Ortus (♂), dies in battle after failing to fulfill the promise he made to protect the kingdom for the rest of his life. When he wakes up again, he finds himself reincarnated as Seretina, the duke's daughter! Even though she's a beautiful girl on the outside, she still has the same determination to become a knight to protect her country in this life. However, besides being sickly and fragile, she is also faced with the harsh duties of a lady. She has to learn manners from her horrible mother, marry a man she doesn't want to marry, and many other challenges that will keep her from becoming a knight. On the way to the royal castle, a demon attack reveals her true power! A new heroine is born, with the strength to slay demons with a single blow, and the peerless beauty to captivate high society! She’s pretty on the outside, but fearless on the inside! The chivalrous heroic fantasy of a young woman begins! (Source: TO Books, translated)

The Earth is being invaded by aliens. The super high school girl, Tachitsu Teto, who is the sole protector of Japan, does her best to kill the aliens before going to school every day. She is feared by those around her, and is a bit of an outcast at school. Then, on the day of her graduation from high school...

"I am Kikyou! I'm working part-time in this cute little flower shop called "Tsumikabatsu". My boss, Baramon-san, is extremely popular with girls and he's a master at flower arrangements! He's a well-respected person. But, WHY does he have to stand so close to me... Aah, Boss, wait! Stop that!" I'm trying to introduce the story here, DON'T TAKE OFF MY PANTS!!!........So, so it's like that, please read this "the beautiful boy working hard in the flower shop, "Tsumikabatsu"!

A short adaptation of the tv series.

From the bond between the 'princes of the snow field' - the Fubuki brothers - to a new start for the kids of the Sun Garden, to the appearance of a new coach at Teikoku Academy, along with others, this anthology tells the stories of Outer Code in a special edition volume! Illustrated by popular manga artists, the physical volume will also contain a never-before-seen story! (Source: Shogakukan, translated)

A typical confession at some yard in the school. (Source: MangaDex)

The story begins 3 years after MC has been summoned. Together with his companions, he defeated the demonlord. He begins planning to build an organization to prevent a demon lord crisis from happening again. He plans to build an Adventurers Guild. He also wants to start his love life with his female healer companion, but before he can confess his love he was once again summoned…by a demon. The demon is asking for help against adventurers. [Original Web Novel](https://ncode.syosetu.com/n6473bp/)

Shinokawa Shioriko, a young owner of a bookstore in Kamakura, loves old books. Separate from the contents of the book, they each have their own story, slowly built as they pass from one person to another. Shioriko loves learning the stories of each old book that comes her way. Gora Daisuke was just scared off of books by his grandmother, an avid collector. When he got into her library one day as a child, she responded angrily and violently. Now his grandmother is dead, and it's time to deal with her belongings. He comes across the complete works of Natsume Soseki, which appear to be autographed! When he is eventually directed to Shioriko to ask about it, she responds with so much more than a simple answer about the signature. As he sees Shioriko's enthusiasm, it looks like knowing Shioriko might lead Daisuke to a new path toward appreciating books! (Source: MangaHelpers)