Reborn Stepmother, Army Wife

The female protagonist is reborn back to the 1980s as a stepmother. Having learned lessons from her past life, she devotes herself to caring for the children, seizes the era's opportunities to build a stable business, and properly resolves conflicts with neighbors and relatives. She stands in mutual support with the steady, reliable male lead, builds their household together, and the entire family enjoys a prosperous, fulfilling life, reaping stable and lasting happiness.