Series Page
Chapter Link (Pages 116-126)
Rating: 4
Drillia catches Matilda masturbating while watching the MC have sex, so she “helps” her out by seducing and having lesbian sex with her.
During this, we learn that Drillia has had experience in lesbian sex with the princess in the past and through that, became very skilled at touching a woman’s body.
Even though Drilla is a concubine, since this is still behind the MC’s back, I gave this the Cheating tag.