
Apparently, according to Japanese Censorship standards (which is full of loopholes), it's not a dick if the neck/corona of the glans is hidden. If it's not a dick=there's no sex happening. Explicit depiction of sex and display of sex organs/anus in Japanese media/art is prohibited... but thread yourself into loopholes, you'd be fine. Fun fact: it is Japanese censorship that brought us those weird tentacle porn. Tentacles=not a dick; therefore, Tentacle porn=not sex.

Ya, it did came out first that way.... then they just probably found the idea very good as dick-replacement in censorships that's why we get so many tentacle porn stuff. I have to hand it to Japanese pornographers and hentai artists, though. Unlike the west, they have to be a bit more creative because it's forbidden by law to show it all off.
Why do they cover a specific place on the dick ?