This small side story occurs when Ash is still a child (presumably around 10-11 years old) and living under Dino´s roof. After several incidents Dino decides that military education will be more to Ash´s liking and that´s when Blanca comes to the scene. The art is the same quality as in entire Banana Fish manga and personally I liked this author´s style very much. Story itself is bittersweet, showing not only grim sides of Ash´s growing up, but surprisingly also Blanca funny moments (yes, he has them). Characters, as always, are strong portrayed. No wonder since both Ash and Blanca are very difficult and deepcharacters.
Overall, I enjoyed this manga as well as other Banana Fish side stories which are all available online. For me solid 8/10 and you should definitely check it out.