If you invite the sister-like, tsundere "Maria", she'll say yes with a clear face! "Put it in," she begs for your dick with her sadistic personality! Her legs twitch as her clit is stimulated, bringing her to orgasm! When you insert her vagina, she turns into a young girl! She says "I'm cumming" in a sweet voice, and you can have serious sex with a naive tsundere girl!