Forgot the title of this manga

[BatLover64]

The story revolved around this kid whose job it was to kill/cleanse his school at night using this power that let him create this cubic force field. His neighbor, a girl, also had the same job and the both had these guardian dog? spirits. As the story goes on, the wider org they are a part of gets a more prominent role in the plot. His older brother has a fish spirit and is at first much better at dispelling spirits.

EDIT: Also I'm pretty sure the name of the force fields they can make is in the title of the manga.

 

[justforthelulz]

@BatLover64
https://mangadex.org/title/1827/kekkaishi/

By night, junior high student Yoshimori Sumimura is a "kekkaishi"--a demon-hunter who specializes in creating magical barriers around his prey.
By day, Yoshimori's got some other demons to battle: an addiction to sweets and a seriously crotchety grandfather!
Yoshimori's pretty 16-year-old neighbor and childhood friend, Tokine Yukimura, is also a kekkaishi, but their families are feuding over who is the true practitioner of the art.

 

[Haikaka]

Definitely this one

 

[BatLover64]

@justforthelulz Yes, that's it! Thanks!