[iamaleksey]

Is there even a word in japanese for "obscene"?

[anabis]

"hiwai" works, but the "waisetsu" is used more in the legal context. Japan did a trial regarding a publisher few years back, called "Matsubunkan trial". Some details in the middle of page: http://comipress.com/article/2007/07/17/2307

[c00ki3s]

hiwai