For some reason, at the request of Res's younger sister and her husband, she ends up dating her younger sister's husband... ``I wonder why this happened...?'' Sister Koharu was confused.Still, there was a reason why he had to accept his sister's request.Koharu is confused by her sister's impossible request.However, Koharu gradually opens her mind and body to her sister's husband who needs her.Even though you know it's not good, it's a pleasure you can't resist.Before she knew it, Koharu was hooked...
