I like how this manga communicates an earnest love for Capoeira, the martial art and the culture surrounding it. While this is a battle manga and the purpose of learning martial arts is to get stronger to beat your enemies, in real life that's not so much the case. I think it's entirely worthy to learn a martial art just because it's fun, to appreciate a new culture and make friends along the way. Plus self-confidence, physical fitness, etc. You don't often see that side of things in these manga, especially since usually it's a native Japanese learning a historical Japanese martial art, so you don't have the "new culture" aspect that any Westerner trying to learn Karate or Judo or Taekwondo will experience.