Junior High School DxD is a spin-off series that takes place after the events of Volume 10 of the original High School DxD Light Novel series. Junior High School DxD follows Zekka Miyamoto, a descendant of Miyamoto Musashi, blessed (or cursed) with her sword 'Tensei' that steals power from enemies' breasts, transferring them to her own. After learning that 'Tensei' is a weapon called a sacred treasure, Zekka knocked on Kuoh Academy Junior High School's door to uncover this mystery and make friends! And then she met... the red-haired demon Rias Gremory. A new DxD story of youth at Kuoh Academy, surrounded by eccentric seniors and classmates, and with highly promising sword skills!"

What would you do if you got yourself a big-breasted maid? This maid even has silvery hair and red eyes like a goddess. That sounds… kinda awesome… But… wait… wait a minute… how can my maid be the demon lord? That's not how this was suppose to go!? My dear Demon Lord, please change out of those clothes and I will take you home right away. (Source: Tencent, translated)

Lost souls seeking their true selves. Wen Xiaoliu is a local physician. When he stumbles upon a man on the verge of death, he treats him and gradually nurses him back to health. The grateful patient swears allegiance to Xiaoliu and accepts his new identity as Ye Shiqi, Xiaoliu's servant. Slowly, their true identities are revealed... (Source: Manta)

A new student steps up to the gates of Kuoh Academy junior division. Zekka, a descendant of Miyamoto Musashi, wields the sword-shaped Sacred Gear "Tensei." Her goal? To make friends at Komaou Academy!? A new "DxD" series begins, guided by unique friendships and by Rias and the other high school students! (Source: Kadokawa, translated)

Itsuki Ichigohara is a married high-school teacher in her late 20's, who finds herself involved with a high school girl, her student, who is 10 years younger. The student's name is Rin Togawa. She is taller than Itsuki, with a beautiful face, mild-mannered but a little childish sometimes. Rin is a good girl, but she has problems in her family life, and as Itsuki tries to counsel her, they somehow end up kissing in bed together. This is an adulterous betrayal, not to mention a crime. How could she have got herself into such trouble that could only lead to her own destruction? — How could I have let this happen? It is a lewd and immoral, but somehow heartwarming relationship. A love story between a female teacher and her female student. (Source: Kadokawa, translated)

After the end of the war between the races, the seventeen races established the experimental city of Myth, where all races can live together as equals. Years later, people of all races come to the famous marriage agency in this city, which claims to have a "100% client satisfaction rate." Anya, an cat-girl apprentice staff member, works day and night to help the mysterious and beautiful director, Donna, and the scruffy guidance counselor, Shaw, to bring couples together, no matter what race they may be. (Source: Dengeki Bunko, translated) *Note: Winner of the Silver Award in the 29th Dengeki Shousetsu Taishou.*

Item-reliant players are all cultists! Hehuan dual cultivation is the true path! When item-reliant players who’ve worked hard to improve face off against naturally gifted prodigies from the Hehuan Sect, isn’t their battle in the bedroom just another way of showing their passion for learning? (Source: Bilibili, translated)

Mukuro x Tsuna

Hibari/Tsuna + Dino/Tsuna Reprinted in volume 3 of [Bambino Machineguns](https://www.mangaupdates.com/series.html?id=56337)