User blog comment:Pacifista15/Lightspeed/@comment-4493594-20120113181005

If I remember correctly Kizaru turned into several "light packages" when he dissolved into light, right? Now this may be because it is hard to actually draw light in a manga but I think there is a certain level of energy he has to maintain in order to make his power work. He cannot just turn into light but it has to be concentrated light. Shining light, that is stronger than the amount of light you usually need in order to see.