Responses
I think it is this one.
http://www.mangago.zone/read-manga/the_villain_s_savior/
OMG!!!!!! THANK YOU SO MUCH!!!!
No problem isekai manhwa is my specialty lmao
The villain's savior
I forgot to bookmark the story. It's about a girl who is a side character and doesn't want anything to do with ML but their world has this soulmate thing where a matching symbol will appear once you meet your soulmate thingy or was it like a power thingy and if your symbol is complicated it means you're powerful. I think MC's hair is green or brown and her sister is the main MC of the story. Sorry forgot the whole story. Thanks in advance.