Soul Worker, Fall to Darkness Sisters are corrupted into futanari succubi by two succubi! This is an animation collection where Stella the succubus corrupts all the sisters into darkness. It is the main story of the previously released "Sister Efner, Corrupted into Darkness by Futanari Succubi"! https://www.dlsite.com/maniax/work/=/product_id/RJ01291587.html Subtitles are available in three languages. Japanese, English, 한국어