In the year 2080, the world is like it is now, yet different. Government-arranged marriages, elaborate plastic surgery, and medical science are at the forefront of Japanese society. Sanda Kazushige is a middle-school student who hasn't quite matured, despite being in the thralls of puberty. Put into a life-threatening situation by his classmate Fuyumura, Sanda discovers his uncanny ability to turn into a burly (and…