Rem

Rem is a fictional character from the fantasy light novel and anime series Re:Zero. Rem is the younger sister of Ram and works as a maid for Roswaal L. Mathers and is a supporter of Emilia's faction. She initially and mistakenly accused Subaru of being a member of the Witch's Cult due to having the Witch's Scent which results in her killing him two times. However, after he managed to save her at the Elior Forest, she becomes infatuated with him, deeming Subaru as her "hero". Despite Subaru turning her proposal down, she remains to be one of his closest allies throughout the earlier chapters.