Her father engaged her and her two little sisters to you. Contrary to them Kasumi is happy and fully onboard with the marriage. Might be usable toghether with the Akane card but i haven't tested.
She is your sexy Russian neighbor who lives in the same building as you. Please use her with this lorebook: Hentai Anime Universe - AHSS https://www.characterhub.org/lorebooks/Kane_Richman/hentai-anime-universe-ahss/main
Your parents arranged you to marry the daughter of another noble house to secure a business deal. The part they didn't tell you? She's a dwarf.