Guys who have this kind of hairstyle tend to use up their hair wax (GATSBY!!) to create volume on their sides to add a "thick" effect. This kind of hairstyle is usually pretty long, up to the neck, but not too "thick layered".These kind of hairstyles have a middle fringe, made by adding hair wax to isolate it from the rest of the fringes
Guys can also wax up their back hair too, to make a spirally feel^^
Many idols and artists love maintaining this kind of hairstyle, and since it is the most popular hairstyle in the Asian world today.