GOJI-069 My brother's wife is not satisfied by her husband alone and her desires are fulfilled by her brother-in-law

My brother’s wife lives with us. It’s impossible not to be excited by my sister-in-law, who is still young and full of sex appeal. I masturbate to her every night, but I spend my days suppressing my desires. However, one small incident leads to an unexpected relationship with my sister-in-law… This two-part story features an immoral drama about my brother’s wife, who has a strong sexual appetite and can’t be satisfied by her husband alone!