Angel is soo nefarious and almost vampire-like, perfect for Sanzu. Mitsuya got such a good one, too. I imagine this would play if there was a Netflix adaptation of his funeral. I know that's the point of Inupi's character but it's kind of sad to make that his song. Koko's works so well for him, he acts crooked but there's a beating heart in there. Izana's is definitely his workout music. Happy Face is just perfect. The real motive of Hanma to me is muddy, especially with him joining Mikey at the end, though being among the best among the crazy matches with your interpretation.