In Tamenglong District, Manipur –

Besides normal marriage like by engagement or by elopement there are also other kinds of marriage.

Noumang-mei-Nou-kao (Marriage by Service): With the agreement of both parties the boy stay at the girl’s parents’ house and stay for three to four years and live as husband and wife then finally return home.

Chamemei : Here a girl is given in marriage even against her consent to a family to whom the girls parent are in debt or some obligations.

Naokakhaomei: In an accidental death of a man, the nearest next brother will look after the children and remarry the wife of his brother.

source: http://tamenglong.nic.in/culture.html