Destined For Love: The Promise - DVD - Critical Mass

Childhood memories can be very confusing. Shin'ya's fondest memory is of playing in the park with a special girl and promising to marry her. He had always believed that girl was his best friend Shizuku, but upon meeting his brother's new fiance Akane, Shin'ya realizes she was actually 'special girl'! After Shin'ya discovers his brother won't have sex with Akane, will he cross the line in order to help her experience true ecstasy?