Responses
In the Chinese manhua the MC would most likely stay with the cheating husband just instead compete with the thot sister for his affection.
If this is a Chinese manhua, the sister's man must either be a ceo or a general, she sleeps with him, runs away to another country and returns 5 years later with twins.
Wearing the same outfit she did 5 years ago.
The first chapter reads like a Chinese manhua but we need more chapters to judge