Divorce attorney, after a consensual divorce with my wife, is it possible to marry her younger sister?

Hello. This is the divorce attorney at Daeryun Law Firm (LLC).

According to the Civil Act, even if you have had a consensual divorce with your wife, you cannot marry her younger sister, who is your wife's family.

Legally, marriage is prohibited with relatives within the 6th degree of the spouse, and the wife's younger sister is the wife's direct family member and falls within the 6th degree of relatives.

That is, even if you have had a consensual divorce, marriage with the wife's younger sister, who was previously in an in-law relationship, is prohibited under Article 809, Paragraph 2 of the Civil Act.

If you violate this and marry the wife's younger sister, not only the parties but also lineal ascendants or collateral blood relatives within the 4th degree may file a claim with the court for the cancellation of the marriage.

If you need related legal procedures or consultation, it is good to consult with an experienced divorce attorney.

I will also tell you the related laws, so please refer to them.

Laws related to the prohibition of incestuous marriage, etc. as informed by the divorce attorney

◇ Civil Act Article 809 (Prohibition of incestuous marriage, etc.)

1. Marriage shall not be allowed between blood relatives within the 8th degree (including blood relatives before the adoption of an adopted child).

2. Marriage shall not be allowed between in-laws who are or were spouses of blood relatives within the [8th] degree, blood relatives within the 6th degree of the spouse, or spouses of blood relatives within the 4th degree of the spouse.

3. Marriage shall not be allowed between persons who were blood relatives in the adoptive parents' line within the 6th degree (養父母系) and persons who were in-laws in the adoptive parents' line within the 4th degree.