Nude filters are the nude mods of anime, and they are good. Tejina Senpai is a great ecchi series, as discussed before. A budding magician gets caught up in her own magic and give people a different kind of show. An artist, whose name is entirely in Japanese, but whose twitter handle is @an_nin_doufu, took up the task to turn ecchi into hentai with a great nude filter. You can see the tweet that reveals all HERE.

There's also a full shot on the artist's page, which you can see HERE.