I watched this 日本动漫 before but i forgot the title. do any of 你 know the name of this anime?

In the 日本动漫 the main character is a girl who has 粉, 粉色 hair and part of it is braided into a rose. She travels to different worlds with a fairy because the fairy is trying to save her from a guy who is trying to kill her. The guy who is trying to kill her has two sides to him. One side likes her and the other side wants to kill her. Also in every dimension she goes to she loses her memory and there is a guy who likes her in every dimension!