Protagonist's Sister-in-Law as a Heroine cont

One or more of the heroines is the protagonist's [url=http://en.wikipedia.org/wiki/Sister-in-law]sister-in-law[/url]. Sister-in-law refers to the sister of protagonist's wife, or the wife of protagonist's brother. In rare instances it may also define the relationship between people who marry siblings and refer to the wife of protagonist's spouse's sibling.

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