Feels like Guts! is pretty close to the ideal power, by that definition. Though I think they implied that's intentional, that Guts! dude is someone who almost was a success, but is too flawed in some way.
"Ha det bra" is indeed a Norwegian goodbye.
Literally, it's something like "have it good", as in have a good however long. Good/nice/whatever. Nice life, nice day, etc.
One of the lesser used English farwells that have a similar tone is "Best wishes". Or, thinking about it, "Fare well". Just a...
This feels like it'd normally be where it ends, and then everyone can complain about it getting axed and rushing the final storyline. But apparently we're nowhere close to done.
Honestly, I think the demon dog is in the right here. If I'd gone above and beyond for my masters, only to be burned alive for it... I'd become a vengeful ghost too.
I'm with Conan(/Shichi), she's a bit too strong.
I mean, it's funny each time. But I'd be terrified in person since she does have a temper. And no restraint when she attacks, at least against criminals.
He became ace upon reincarnation? That's an unusual trait in these stories... But I don't hate it. Hope it sticks. Better than all these horny Isekais. (I still read the horny ones, of course.)