Gods, I love the panels focusing on the puddles, the dirty shoes, the water dripping from skin, the toothy speech. The pervading sense of uncleanliness, grossness, and invasion of private space building up - helped by the fact that this is post-covid, when instructions to disinfect surfaces in public spaces like the bridal meeting room were important. It's all these little odd things, plus the husband's behavior, that created such a great atmosphere.
Lots of subtle twists too - first it's as if the husband is very controlling, the woman worn down into quiet submission. Did they argue before this? Is she nervous? Was the husband so negligent that he didn't care that she was dripping wet, from a mishap, or because of the weather?? Does she just have a medical issue that causes unnatural levels of perspiration? The husband not inviting anyone says something, but we never learn exactly what. It's not like he's estranged from them, they're his references! Is he hiding something from his family? Are they gone? Was this an elopement? But the wetness doesn't stop, hinting that there's something weirder going on. Then the wedding day arrives, and with it the revelation that all of the bride's guests are also wet...
There's no pay off, no resolution. Just a return to the invasive, dreadful uncleanliness with the close-up of the bride's mouth, water inside overflowing like spit from a rabid animal.
And honestly, it works very well. Damn.
Water is usually a bridge to spirits and the underworld. Pretty common for vengeful spirits in Japanese horror to also somehow manifest dripping water and puddles. I have no idea what camellias symbolize, but I've read before that withered camellia flowers tend to fall whole, as if it was beheaded, so it's also another metaphor for death or suicide.