Check out the *SFW BL Food Manga* that led to this story where Medb fucks Archer in the ass with a strap-on (I'm not making this up). 100% free on the artist's pixiv! https://www.pixiv.net/en/artworks/71128717
. . . Pretty sure Rin probably fucked Archer in the ass with a strap-on too
Is it gay that I want to know where this goes from a story perspective?
Whatever, EMIYA'S harem protagonist ex strikes again. I can totally see this being how she acts in bed with only Cu being allowed to penetrate her, every other partner gets the dildo