After Rebirth, Minor Character Only Wants to Level Up

In her past life, Ye Ling, a girl from the countryside, was consumed by vanity and self-doubt. She died alone, burdened with guilt over her husband, having lived as the quintessential supporting character. Reborn, Ye Ling embraces her role as a supporting character, hoping to atone for her past regrets. Yet, she discovers that her 'husband from another life'—strong on the outside but gentle within—also harbors feelings for another. In the end, she simply wants to tell him: “Bro, we're both just supporting characters.” — Description from novelcodex.org