The British TeaCup

I think it's worth saying that the reason Flowery turns around so fast from being the worst guy ever to the coolest guy ever is largely because over the course of Chapter 5 you slowly learn that Flowery is actually the pure definition of "cool." He doesn't care if he looks silly. He doesn't care if what he's saying doesn't make any sense or if his entire gimmick is totally fake. He's gonna do whatever he wants anyways, no matter what anyone else thinks about it, and he's going to believe in it 100% even when he knows otherwise, because believing might make it real. And it's that pure and unabashed sincerity that makes him incredibly cool even when he's going on about "jarona" and "nothing is more powerful than a flower's dream." He's just genuinely super awesome actually.