My mother's remarriage: My mother married my best friend

For Yumi, who has raised her son on her own, her son was an irreplaceable treasure. That's why I tried not to show my son any of the troubles he was suffering at all. Perhaps her son knew this, but she was working hard to support Yumi. However, Yumi had a fiance that she trusted more than anyone else. It was my son's best friend by Yori. When he gives him a passionate caress, his brain, which was supposed to be full of sons, gradually becomes filled with his beloved fiance...