The story is set after the "Arahabaki Incident," and one year after Chuuya Nakahara joined the Port Mafia. A detective from Europe named Adam appears in front of Chuuya, with the aim of protecting Chuuya from Paul Verlaine, also known as the king of assassins. Paul claims to be Chuuya's old brother, and he vows to murder everyone Chuuya cares about. Based on LN Vol 8.

The previous lords have committed as many atrocities as possible to fill their bellies. I, the only daughter of that house, had discovered that my servant and lover was a spy. And as the people wanted, my life ended with my execution. However, with the memory of getting beheaded intact, I began a new life. I was planning to shoulder the sins of my past life and become a nun, but by some trick of fate, I came to work as a maid for the current lord. Under my former lover, whose name, age and even hair colour were all lies. *Note: Chapter count includes an epilogue chapter.*

When he was younger, Kujou Kiyosumi was incredibly awkward and nerdy. One day in elementary school, he courageously confessed his love to a girl, but she told him in front of the whole classroom that he was "disgusting" to be around. Shocked, Kiyosumi asked the coolest guy in the class, Sagiya Maki, to help him become more likable. Thus, began the days of training and now in high school, he had finally achieved most popular status alongside Maki. Everything seemed to be going along smoothly until...

Uno and Reo are neighboring childhood friends. One day, a friend tells Reo that he should become a model. Now, they are high school students, and Reo has become an extremely popular model... yet he acts like a spoiled child around Uno! **Included one-shots:** \- Renai@Home \- LIFE+B

A series of 4koma comics drawn by various mangaka involving characters from the KEY visual novel Clannad.

A girl who is troubled by her voice that doesn't match her appearance, and a girl who feels she has reached her limits in songwriting. The story of two young musicians. (Source: Ichijinsha, translated)

The calm composed honor-student, Satomi has always stated his dislikes about Keiko but meeting accidentally at a preschool, Keiko makes an unexpected connection that is found between having to look after her younger brother as Satomi does with his younger sister. This leading to Keiko being able to speak with Satomi normally, to coming to the point of helping Satomi who is poor with housekeeping...!? (Source: Intercross) Includes oneshots: Ore-sama Housekeeper Digital Honey

Sora somehow ended up in a science class with all boys. Now, she'll transform these untalented boys into super boys!!? *Notes: \- Includes the one-shot "Sakurairo Koiiro". \- Includes the one-shot "Sore demo Yappari Kimi ga Suki".*

Haru and Sagiri are best childhood friends. When Haru develops a crush on a model called Jay, a jealous Sagiri yells ''I can accomplish everything!" One week later, he became a model. Haru was happy for him, but the two began to grow apart; Haru stayed the little girl she used the be, while Sagiri acted like a classy mature guy. Will Haru still keep visiting Sagiri and help him with chores, or will Sagiri actually grow up and leave Haru for good? **Includes one-shot:** Kamen no Pianist

Onoda is avoiding his childhood friend, Hiroto, because of what he did back in the past while the other is wondering what happened why he is being avoided. But because Onoda was ignoring a teacher in school, Hiroto had to drag him in to the counselor's office, and that's​ when their friendship started blooming again. Will Hiroto find out why he is being avoided?

Hane is finally starting high school after being in and out of hospitals throughout most of her childhood. On her first day, she musters up the courage to greet one of her classmates, Kotori, only to witness him fist-fight upperclassmen. Seeing the fight, Hane faints and is readmitted to the hospital, and while she's recovering, Kotori surprisingly comes to visit her. Could this delinquent be more than meets the eye? "A sparkling new love story"!

The sequel takes place a few months after the end of the first series. Shinkurou and Suzu have gotten married and settled down as vassals in the employ of the governing family of Ima. Just when they've gotten used to the rhythm of their new, peaceful life, orders come from an influential government official that Shinkurou and Suzu must travel to the capital to meet with him. Along the way, they are beset by robbers and demons, and find they are being followed by a mysterious mononoke in the shape of a little boy?! The two must reunite with old friends, and make some new ones, in order to do battle with the supernatural forces that continue to plague them!