There is a webtoon about Aimu's cousin, you can find it on the official webtoon or on naver, I think the name is "her mannequin"
is it this one? https://www.webtoons.com/en/romance/her-mannequin/list?title_no=2875&page=1
Yes !
There is a webtoon about Aimu's cousin, you can find it on the official webtoon or on naver, I think the name is "her mannequin"