The Barren Alpha Knocked Me Up with Twins

Kaelen is the most powerful Alpha of his werewolf clan, yet he struggles to have children, so his grandfather arranges a marriage into the Chris family to secure an heir. Chris, mistreated at home, runs away and takes a job at a bar, where she is drugged and ends up in a one-night stand with Kaelen. Soon she discovers she is pregnant, and when she returns home to ask her stepmother for money, she is humiliated until Kaelen appears, takes her to the hospital, and insists she keep the child.