No, it should go like this:

[Today] “Currently I’m the strongest aside from the king”
[Tomorrow] “Currently I’m the strongest aside from the king. Long live king Hifumi.”

[In the night between today and tomorrow] “Yo, are you the king? I heard the king is the strongest fighter in this country. So I came to fight you.”, said Hifumi five minutes before King Buell’s untimely death.

Expecting mass carnage? This is Summoned Slaughterer, where atleast once per arc there will be a massacre!

Or origa could not take her seriously and treat reni like a younger sister, who knows lol

Err, so if I get this right, the bear guy was getting somewhat insane(kinda half blacked out) by having his ideals crash down on him, he hit that dogs arm away when the dog tried to be nice and ask what was wrong, then because the dog swore in a loud voice since it was painful and he was pretty much assaulted for trying to be nice, Salgu(who have started to become a bit insane), hit him right in the face and killed him by reflex/instincts or something when startled and disoriented? Yeah, so much for that guys attempt at justice and righteousness or whatever 😀

depends on what hifumi does and says.
if he says or does nothing it will happen else it is strange.
but if he says something like she is my second wife treath her well then Origa will not attack i believe and doing the same for Rerni
the qustion is what will the bunny do?

as long as the girls accepts hifumi murder boner i don’t think he will refuse

No, it’s not Gengu. It’s another dog