The second generation of Subaru's flagship model, the Impreza. Subaru's development of the second generation of the Impreza was focused on improving collision safety. Accordingly, the body design was completely redesigned, the body size was increased and the body rigidity was dramatically improved compared to the previous generation. At the time of the second-generation Impreza's launch, Subaru was searching for a new design direction, and the second-generation Impreza underwent two major front design changes in line with the change in Subaru's design direction, making it the rare model with three completely different front masks in the model cycle. The model became a rare example of a car with three completely different front masks in a model cycle. As with its predecessor, a rally-based WRX model equipped with a 4WD system and a turbocharged engine was set up as a base machine for competing in the World Rally Championship (WRC), and boasted high dynamic performance on various surfaces such as dirt, snow and tarmac. Rally cars based on this model helped Richard Burns and Petter Solberg win the WRC drivers' title in 2001 and 2003 respectively.

The daily life of the protagonist, Haruki Chitose, is perfectly peaceful. Drop your mobile phone and it's in the water. Lost wallets countless times. If you pedal, you get into an accident, if you walk the streets, you get tangled up. ......... Even if other people would call it a misfortune, this level of trouble does not count as a 'normal' day-to-day life for him. Haruki comes to terms with such endless troubles and lives in peace (?). One day, a courier suddenly delivered a package to Haruki. One day, a courier suddenly arrives. One day, a parcel arrives out of the blue, without an address or sender, with only a sticker saying 'Biotic' on it. Even Haruki, who spends his daily life in trouble, could not have expected such a package. He never thought that a "girl" would be delivered. ...... This was not a "new misfortune" ............ that Haruki got, but his "first good luck", and the beginning of the upheaval. I came to wipe out Haruki's misfortune!　The girl who claims to be a 'god' and stays at home in the name of protecting him from trouble ....... Her behaviour causes new problems, and before she knows it, a small trouble turns into a big commotion involving the people around her! In the midst of these crazy days, what will the 'good luck' Haruki gets in her hands bring? What is the purpose of the girl who calls herself God? Will the misfortune that haunts Haruki disappear? The answers lie in the mayhem that is about to begin!

The younger sister of the protagonist, who loves her brother. She is a first-year student at Mizunagi Gakuen and does all the household chores in the Chitose household, including cooking and laundry. Her hobbies include observing her brother and taking care of him. She is usually gentle and quiet to everyone, but when her brother is involved, she shows surprising behaviour. She is shy when it comes to love, and goes berserk when she is alone with her brother.