Tsugumomo - Vol. 11 Ch. 54.6 - Special 1 - The Exorcist and The Jinrei User

[MangaDex]

 

[Kegaten]

The absolute madman!

 

[Jamming10001]

That's not a halberd. My best guess is a naginata.

 

[The5thSeraph]

Was this a crossover? It read like a crossover.
Also there are too many lolis already, so it would be best not to add any more to the permanent cast.

 

[nononoyesyesyes777]

Was this a crossover? It read like a crossover.
Also there are too many lolis already, so it would be best not to add any more to the permanent cast.

I know I'm 4 and a half years late to this, but it's a crossover with a manga called Kakuen no Hinagiku. I don't think there are any translations of it still, but I found this mega upload of the raws.