Hate to be the bearer of bad news, but this manga is a ton of hot shit. The pacing of this manga is covering 20 chapters of plot and world building in a single chapter. The only good thing I can say about this is that the female lead looks pretty, which is a really really low bar considering we just covered 30-40 chapters worth of content in 3 chapters
The manga looks nice, but the pacing is too fast, and so far (chapter 4) this feels like to me to be the (early) basic setting (with some alterations) of Kimetsu no Yaiba (Demon Slayer).
The 1st chapter is like a oneshot, i like how it gets to the point. because this is a tale about the bride and groom, expect an approach of slice-of-life with action on the side