Juuou Mujin no Fafnir  

Unlimited Fafnir, 銃皇無尽のファフニール

Second Lieutenant Mononobe Yuu has been dispatched to Midgard for the purpose of attending an all-female institution where his sister Mitsuki serves as the student council president. The school is designed exclusively for individuals with "D" abilities, which are essential in combating dragons. Both Yuu and Mitsuki possess these capabilities. Upon arrival, he encounters Iris Freya, a fellow classmate who is struggling with her studies related to their "D" powers. Together, they will strive to excel in this perilous environment.

Juuou Mujin no Fafnir has been digitally published in English as Unlimited Fafnir by Kodansha Comics USA since January 19, 2016.