Vinum

Vinum is a succubus fought in the collab The Night Country and the Heroes of the Seven Worlds. She comes from Succubus Prison: House of Lewd Demons with Nemea and Myusca. She's a cruel succubus that enjoys corrupting heroes.

Biography
She is first briefly seen at the end of chapter 2 when Kazuya runs into her and Nemea. She's intrigued by the fact that they managed to escape Myusca.