Hee! I knew that about Mamoru - I don't know how common a name it is, but if I watch subtitled crdits it seems to be at least not uncommon. I just read a Japanese crime novel (in English!) where the main character was a teenage boy called Mamoru whose family history was dogged by scandal and corruption, and who ends up trying to clear his uncle's name in a manslaughter charge while all around, weird science reigns. The author's next novel was about a young pyrokinetic woman who ends up entangled in a secret vigilante society set up to deal with cases the police can't touch. The next novel was about the madness caused by a computer RPG -- I guess I know what Koyasu was reading . . .