From OMGWiki
Peorth is the fourth goddess to take up residence, albeit temporary, at the
temple. She appears as a result of a phone call from
Keiichi. However, as a dedicated employee of an agency that rivals
Belldandy's, the Earth Assistance Hotline, you could imagine how shocked she was to find that her newest client already had three goddesses living with him! Convinced that the reason she was summoned by Keiichi was because Belldandy wasn't doing her job correctly, she then sets out to do anything to satisfy Keiichi's needs. That in itself doesn't sound like anything too exciting, but Peorth's belief, however incorrect, was that Keiichi needed some intimacy.