Mitsuri Kanroji  is a Demon Slayer and the Love Pillar of the Demon Slaying Corps

Mitsuri is a very emotional and passionate person, who is constantly complimenting people in her head, which likely relates to why she is called the 'The Pillar of Love.' She is rather shy, and is always soft and kind to others, most notably to Obanai, whom she appears to share an especially strong bond with, but is easily flustered and can't take insults very well.