Ishtar Wants Your Mana, Eresh Your Heart-both Want Your Cum! (fate Grand Order) [femdom, Lesbians, FFM Threesome]

You summon Ishtar as your Servant, but things doesn't go quite as you planned. It turns out that…she makes YOU her Servant! And it just so happens that Ereshkigal is under your service too, and when the two of them meet… Well, you will find out!