User blog comment:IamJakuhoRaikoben/Chapter 450: Alone in all the World, Review./@comment-2214433-20150831081149/@comment-4449950-20150831102755

I've always sort of thought that it was a side-effect of Giant. Dunno, just the idea of him getting bigger and smaller all the time seems like it would play a part, and, for all we know, he could just choose to stay small rather than a normal size. After all, it would be a good strategy in battle XD Appear really small and then BAM, five storeys tall :P