Good Luck Girl!

The God of Poverty, Momiji, is sent down to earth to greet a spoiled high-school girl named Ichiko Sakura, who has had good fortune all her life. Momiji explains that Ichiko has an abnormally high level of good fortune, and is also sucking up fortune from those near her. Momiji attempts to take some of Ichiko's fortune and make her a normal girl, but Ichiko manages to fight her off. The next day, however, Ichiko's butler, Suwano, has a heart attack and is left in a critical condition as a result of Ichiko taking his fortune over the years he served her. Ichiko agrees to let Momiji suck some good fortune out of her, but then she runs off with it and releases it at the hospital, saving Suwano's life. Afterwards, Ichiko decides to sack Suwano from his position so he can live his own life without being at risk. A week later, Ichiko's fortune levels soon return, as does Momiji.

In order to get closer to Ichiko, Momiji transfers into her class, much to Ichiko's displeasure. As Momiji continues to bother her, Ichiko meets Bobby, a perverted travelling priest with the ability to detect fortune energy, giving her an item called the Soumin Shourai, allowing her to manifest her good fortune into various creatures. Momiji responds by manifesting her own monsters out of her misfortune, but they turn out to be useless and she is soundly beaten.

Figuring she needs a boyfriend, Ichiko takes an interest in her sleepy classmate, Keita Tsuwabuki. Upon finding and returning his ID card, Ichiko is invited by Keita to have dinner with his siblings, who are quite poor as their parents had left them. Keita soon takes a strong dislike to Ichiko when she rejects his ideal that being together is more important than money. The next day, Ichiko tries to make up with Keita's brother Ryūta by buying him a super rare trading card. However, he ends up dropping the card down a sewer and gets trapped in there whilst attempting to retrieve it just as a typhoon starts to settle in. As Ichiko is told by Keita how he doesn't want to be in anyone's debt, Momiji makes her aware of the danger Ryūta is in, prompting her to go and save him. As Ryūta gets swept into the river, Ichiko dives in after him, using a device given to her by Momiji to use her fortune to rescue him.

Momiji ends up summoning the masochistic dog god, Momou Inugami, and has him transform into a puppy so he can get close to Ichiko and attempt to steal her fortune. However, Momou finds that getting the fortune off of Ichiko isn't as easy as it looks. As Momou observes Ichiko's behaviour, she notices her personality is different when reading letters from Suwano. That night, as Momou activates a Misfortune Item to spread misfortune, the box containing Suwano's letters falls from the top of the desk, and is thrown away by the cleaners the next day. When Ichiko learns of this, she goes to the trash dump and spends the entire night searching for the box, much to Momou's surprise. Against his better judgement, Momou finds the box for Ichiko. As Momou deduces that Ichiko may not be such a bad person after all, his cover is blown when he reverts to human form, prompting a swift punishment from Ichiko.

Momiji uses an Ageing Box on Ichiko in an attempt to turn her into an old lady, but it instead turns her into a little kid. As Ichiko escapes from Momiji, she encounters one of Keita's sisters, Mika. As Ichiko spends time with Mika in order to avoid Momiji, she encounters Bob and Momou, who tell her she needs to find another Ageing Box to turn her back to her normal age, and manages to get them to search for it. Ichiko then goes over to Keita's home and requests to sleep over whilst trying to keep her identity a secret. The next day, Momiji follows Ichiko as she goes with Keita's family on a picnic and manages to capture her once she's seperated from the others. As Keita tries to search for her, he falls down a cliffside.

Ichiko manages to escape from Momiji only to learn that Keita had gone missing trying to search for her. Realising that Keita had all the things she lacked when she was a child, Ichiko enlists the help of Momou to locate Keita, finding him in a near-death state. As Ichiko tries to revive him, Momiji extracts a small amount of Ichiko's fortune energy so she can save him. Keita awakens the next day with his injuries healed and reunites with his family. As Bobby and Momou manage to locate Urushiyama and retrieve a box from him, Ichiko says goodbye to Keita before meeting up with them and returning to her normal age. However, the experience has left her in a solemn state, only appearing to react to Keita's presence. This turns out to be as she wants to try and return the handkerchief he received from him. After managing to return the handkerchief, she returns to her usual noisy self.