Tenshin Ranman: Lucky or Unlucky?!

"Haruki is a hard-luck guy. A lot of troubles happen to him or does he invite troubles? One day, he receives a parcel. No sender, no address. Just written "creature." He can't expect it.... It's a girl. According to her, she is Goddess and came here to remove his misfortune. Like this, she starts living at his house. However, her demeanor causes various troubles, involving other people. Will he be able to live a fortunate life amid such a confusing situation? What is her purpose? Will his misfortune disappear?" (Source: VNDB)