Twin Star Exorcists(2013)

Sousei no Onmyouji

Rokuro dreams of becoming anything but an exorcist! Then mysterious Benio turns up. The pair are dubbed the "Twin Star Exorcists" and learn they are fated to marry... Can Rokuro escape both fates? When Rokuro's best friend Ryogo goes missing, Rokuro is forced to ask Benio for help to enter Magano, the realm of the evil Kegare, to rescue him!

(Source: Viz Media)

Notes:
- Includes 6 extra chapters and 2 special chapters.
- Chapters 51 - 54 were originally a spin-off series, later merged into the main series.
- Chapter 13 was split into 2 chapters in the volume release; chapter count reflects the magazine releases.