expression, noun
shotgun wedding; marriage due to unintended pregnancy
Colloquial expression for a marriage that happens because the couple is expecting a child. Often used in casual conversation or media.
See also: 出来婚
二人はできちゃった結婚だったけど、今はとても幸せそうだ。
They had a shotgun wedding, but they seem very happy now.
It seems that shotgun weddings have been increasing lately.