Fucking her lover's older sister because her breasts are bigger than Aka Asuka

I've known each other for three months and this is the first time I've gone to her house to meet her family. Today, only her sister Aka Asuka is at home. She is ten years older than me but still single. I was impressed with her body because that's also what I like, big breasts, chubby body, I immediately imagined her doggy scene would be so happy. That's all I was thinking in my head, but I already loved her sister, but something I never expected happened, Aka asked me to love her.