Vesper is the name of the evening star and Lucifer is the name of the morning star- both are regarded as the brightest star in the sky. However, both of those "stars" are actually the planet, Venus. Brave Vesperia is said to be the brightest star in the night sky, but it's actually a massive blastia. Blastia cores are made of apatheia, which are taken from Entelexia like Elucifer.
Fridge brilliance playing tennis with Up to Eleven, but the ridiculously conspicuous looking Wonder Chef manages, somehow, to be even more conspicuous when standing around as himself on the docks in Nordopolica than in his already obvious disguises. It makes sense, since the rubber duck running in circles, the daikon radish, and the pinwheel were all "disguises, so of course he'd be less conspicuous. The Up to Eleven comes in at the fact that you really wouldn't expect him to manage to look more conspicuous than his "disguises", but he can. It just doesn't seem to make sense until you realise the other things were disguises.
The subplot involving Yuri's vigilante behavior serves two purposes: first, it helps the players better understand the motivations of Phaeroh and Duke because it shows Yuri reaching the same mindset to deal with Ragou and Cumore. Second, it serves to demonstrate Yuri maturing, as he's repeatedly put into a position where he has to argue against that mindset, for the sake of someone he knows genuinely means well and isn't causing harm intentionally. It shows the flaw in his vigilante mission, where getting so used to having the moral high ground and being able to pass down judgement and execute anyone he perceives to be evil will lead him to acting like Phaeroh and Duke, attempting to kill innocents without giving them a chance to change their ways.
YMMV on that one. Their armor is outright stated at the beginning of the game to be very very thin. If a palm-sized rock is enough to knock a guy out (despite his helmet) the armor couldn't be very heavy. Its possible that he still could have drowned with the accumulated weight, but not likely.
Still an awful dick move on them, though, especially when used as humor.
Compared to historical protests against tax collectors, this Troper viewed it as light.
It's doubtful Yuri would've just left him there. He either fished the guy out himself or made sure his buddies were able to do it. Assuming of course the armor was indeed too heavy.
This is all assuming the river is even deep. It's stated Adecor only got a cold from it, not that he nearly drowned, and that's by Adecor himself- you'd think he'd mention he nearly drowned if he had, considering how much he and Boccos don't like Yuri. The river might be a shallow one, especially to someone as tall as Adecor, who is taller than the six foot Yuri.
Yay! You've destroyed all the Blastia! Isn't that great guy with a blastia for a heart . . . Oh Crap!. Just as he was starting to not be a Death Seeker too.
Which leads to the Fridge Logic: the ending shows that he did, in fact, live. How?
This is sort-of addressed in the game; his blastia is unconventional; it doesn't run on aer, but on his own lifeforce. As such, presumably it was not converted.
There's also a scene you can get in Dahngrest where he's told to have the party's blastia expert take a look at it; assuming he followed this advice, it's possible that they were able to get a spirit to power the blastia.
So, we put an end to superbeings powering the worlds machines... so that another superbeing can power a machine. What.
But this time, the superbeing powering the machines in question won't destroy the world.
At Aurnion, Raven tells Karol that the spirits are affecting his blastia. They probably helped keep it running even after all the cores disappeared, out of compassion and/or as a reward for helping save the world.
Rita started studying blastia at age 10. Consider how emotionally detached she is from people while that into account. It seems like there may be more wrong with The Empire's system than even Yuri is aware of.
The final solution of the game is hinted at when you first visit Halure, though a new player won't realize it at the time. The barrier blastia growing into a tree is explain to be a not-unheard of phenomena. Later in the game, you'll be taking pieces of Apathea (unprocessed Blastia cores) and binding them to... something to resurrect them as spirits. This is the very first hint that Blastia were onceEntelexiaand maintain some consciousness as a result.
This does bring about some mild Fridge Horror though. The tree's blastia became a spirit in the ending too. Will this kill the tree, as well? It also raises a second question...
The fact that it even became a spirit is odd- a sidequest shows Rita scoping it out and saying it's no good, since it already made a spirit itself. They even talk to it, deducing it's a flower spirit. So considering that, Halure's tree is probably safe. It probably wasn't meant to be shown in that cutscene of the barriers being taken away.