Kenzou Tenma, a Japanese brain surgeon in Germany, had it all: incredible skill at his work, a rich and beautiful fiancee, and a promising career at his hospital. However, after becoming disenchanted by hospital politics, he chose to save the life of a young boy who got shot in the head over the life of the mayor. As a result he lost the support of the hospital director, as well as his position in the hospital and his fiance. A short time later, the hospital director and the doctors that replaced him were murdered, and once again he was catapulted back onto the top. But as the chief suspect of the murders, Tenma did not get a easy life. As a matter of fact, it seems that the boy he saved was much more than he had appeared to be... Now to clear his name and to correct his past mistake, Tenma must get to the bottom of these and other murders, and investigate the truth of the Monster who is behind all of this.
Since Hiro Hiyorimi's parents died, he and his sister Sawawa have lived apart. Now, Sawawa has gotten a new job as the caretaker of a creepy old mansion, and has sent Hiro a letter asking him to come and stay there with her. Finding the mansion boarded up and apparently empty, Hiro wanders around town looking for Sawawa. Instead, he runs into the new resident of the mansion, and ends up pushing her out of the way of some falling steel beams. Unfortunately, he loses his own life in the process. Luckily, or perhaps unluckily, the person he thought he saved turns out to be the princess of the monsters, and she grants him a second life...but only for as long as he will be her servant.
You can do whatever you want, whenever you want. Who's going to stop you? Well, that's the rub. You're not the only giant monster. Other monsters are running around smashing the stuff that's yours to smash, eating the things that are yours to eat. It has to stop! It will stop -- soon, you sense. An epic battle looms on the horizon between you and all the other monsters. When the time comes, will you be ready?
You can do whatever you want, whenever you want. Who's going to stop you? Well, that's the rub. You're not the only giant monster. Other monsters are running around smashing the stuff that's yours to smash, eating the things that are yours to eat. It has to stop! It will stop -- soon, you sense. An epic battle looms on the horizon between you and all the other monsters. When the time comes, will you be ready?