Sidestory released on Pixiv.

The setting is London at the end of the 19th century. Rui, a vagrant boy, meets Sherlock Holmes, a consulting detective who has just started his own practice, after a murder case. Although he harbors hatred for Holmes, who doesn't pay attention to anything other than upper-class cases, Rui decides to work as Holmes' "dog" in order to gain the ability to protect vagrants.

Lloyd is a novice adventurer whose dream is to discover “true strength” in the capital he's always admired, despite growing up with neighbors who always considered him weak. He departs his hometown, which just so happens to be located right next to one of the most dangerous dungeons in the world. Lloyd may think of himself as powerless, but when he goes to the city that serves as the starter town for adventurers, the difference between him and everyone else couldn't be starker. (Source: Anime News Network)

SEXY Lupin III is a 5 chapter spin-off of Lupin III published to promote the airing of Lupin III Part 3 (anime). It features stories written by writers of Lupin III Part 3.

Isurugi Takuya has just been assigned a post as ground staff and maintenance for a very neglected air squadron. He's surprised to learn that it was meant to be an all-women aerial acrobatic team! Unfortunately, none of the higher officers have ever really taken it seriously. Isurugi and the hardworking Haneda Miyuki are determined to rebuild the squadron, and face down opposition to the idea of women as jet pilots! Soon they will add new pilots to their team; the exotic-looking, angry, half-japanese Mitaka Arisa, the gambler Saginomiya Sakura, and the enthusiastic, immature Shimorenjaku Youko, who has a pet vampire bat. Will they be able to prove the value of their team to disbelieving military men? (Source: MangaHelpers)

Set within a ravaged world, a girl protects the people from these monsters is interwoven into this mysterious fantasy.

Yumi Katagiri (a pseudonym) is a high school girl who does a bit of compensated dating on the side. But her "customer service," is a little bit different from other girls'... She would continue this behavior night after night until one day she is discovered by her high school teacher. A unique romantic suspense between a lonely girl and a passionate teacher! (Source: Kodansha, translated)

This spin-off of ‘Yankee JK Kuzuhana-chan’ depicts the untold stories of the heroines that were not shown in the main story.

The year is 2008, and Mikuru is a 16-year-old high schooler who often disagrees with her mother Yuki. One day a girl appears in front of her—“Yuki;” a cute girl who’s thoughts, memories and body are from 24 years earlier. In short, Yuki has “time-slipped” from 1984 to the present, and when Yuki wakes up she is shocked to find that the year is not 1984, and that Mikuru is her daughter. Now both mother and daughter are the same age and living in the same house together, with an older man who’s supposed to be her husband. Until when she can return home, the girl who has crossed space-time decides to discover her future.