The Sister With Strength – Chapters 38 & Fanbox Extra Chapter 13.5

Series Page
Chapter 38 Link
Fanbox Extra 13.5 Link
Rating: 3

Sade and Kaloris are shown licking and groping Belphegor during her birthday party.

This was the first fanbox extra to not have the “Lost Paradise” title, so this is probably canon and not a part of Rosetta’s doujin.