complete?

(〜￣△￣)〜
Nooo are you serious? It is so not an ending. I hope theres more its getting so good xc

It seems only implied with a "the end" at the end of the chapter. There is a possibility that this is either a prequel or some error (the end of the chapter vs the end of the story). The scanlators said they were unsure and would keep their eyes and ears open for the possibility of the manga continuing

It does happen occasionally. A mangaka has a really successful one shot, builds a fanbase, and the story brings a profit that convinces the publisher more chapters is in order.