What's with the fantasy hair?
This is nothing unique to all-out. This is infact so common in Anime that Tv Tropes has a page dedicated to it.

You've been warned, TV Tropes link - Anime Hair. Take a look at the image of Yugi from Yu-Gi-Oh.


Find below the excerpt from TV Tropes


  Usually, the most important characters of the story will have wild spikes or a cool-looking hairdo in order to stand out among the crowd. It also helps to create a distinctive silhouette that will stand out in branding, media, and merchandise. It may be one or more different colors that don't appear naturally in real humans (blue is a popular choice). Sometimes the hair appears semi-transparent, with the character's eyes visible through it, although this presumably represents hair fine enough that it isn't completely obscuring, rather than anything outré. Anime Hair is very common among protagonists of anime/manga for the Shōnen (Demographic), although the trend seems to be headed to more plausible styles: compare Son Goku's hair to Ichigo's.