Daddy Dotes on His Wife so Sweetly

Four years ago, an accident entangled her with him. She had his child, but he held someone else in his arms. Four years later, she was forced to take the place of her stepsister and become his bride. She secretly laughed, maybe we were destined to be a couple, but we just took too many detours. However, when the man expressionlessly handed her a marriage certificate, was it all his own fault?