Hosanna777's Favorite

I'm feeling like reading mangas where one of the partner is constantly put down/bullied/worries over things to the point that they collapse/get sick/etc. Any recommendations please? c:

Looking for a manga where a girl gets bullied by her class, especially by the leader of them five (I think) most popular guys doumeki he is called. she goes to a school for wealthy kids but is poor. And the fall in love. She has a friend from the country who has just become filthy rich too.