Episode 13 of Sin: Nanatsu no Taizai Zange-roku (Seven Mortal Sins Records of Confessions, sin 七つの大罪 ショートアニメ「懺悔録」) is pretty straight to the point. No build up required here. Belial and Lucifer are squaring off in a tug of war with a difference.
There isn't any actual nudity in this episode but I think it makes up for it with some pretty different service.
Once again, these are short episodes no more than a couple of minutes in length.
Sin: Nanatsu no Taizai Zange-roku - Episode 13
Episode Content: This fanservice re-cap article covers the fanservice from Sin: Nanatsu no Taizai Zangeroku Episode 13 (Seven Mortal Sins Records of Confessions, sin 七つの大罪 ショートアニメ「懺悔録」). As always, all images are uncensored so this article is NSFW. This episode features no nudity.
The subtitles are still visible in the images as I couldn't find a version of the show that wasn't hard-subbed. Kind of annoying but it's better than skipping these episodes altogether.
This episode features Belial and Lucifer attempting to pull strips of parcel tape off of each other's pussies via crocodile clips and a length of string. It's a weird episode but it's interesting to say the least. We have some pretty prominent protruding nipples as well which adds to the fun.
All of the main images are included here, the GIFS are at the bottom in a gallery.
Sin: Nanatsu no Taizai Zange-roku Episode 13 - GIF Gallery
Sin: Nanatsu no Taizai Zange-roku Episode 13 - Conclusion
Episode 14 of Sin: Nanatsu no Taizai Zange-roku is coming up and it features another character attempting to rip something off of her genitals.. Bless you Seven Mortal Sins!