Yoru, who had been suffering from the pain of living due to a series of misfortunes, was offered a helping hand in the form of the country's “forced policy to combat declining birthrates”... which meant she was selected to be executed. Akari, her childhood friend, appeared before her, who was overjoyed. Yoru decided to spend her last moments happily as a final reward, but...?!
Rika Furude had always known Hinamizawa as her home, finding comfort in the peaceful mountain village and the company of her friends. However, she longed for something more and wished to share her desire with her best friend, Satoko Houjou. Rika yearned to attend the prestigious St. Lucia Academy, where she could receive a refined education far from their rustic surroundings. Despite initial hesitation, Satoko agreed to take the difficult entrance exams, and they both embarked on a new journey. At St. Lucia Academy, Rika effortlessly adapted to the high-class atmosphere, showcasing her innate elegance and composed demeanor. On the other hand, Satoko struggled to fit in, relying on Rika's support to get by. However, as Rika befriended a sophisticated clique of girls, Satoko's isolation grew, and her academic performance suffered. Their friendship deteriorated until it became irreparable, with Satoko driven to despair by her increasing feelings of loneliness. Succumbing to a dark impulse, she committed an unfathomable act.
Satou is a manga editor who suffers from ‘Magical Girl Phobia’ triggered by dreams featuring a mysterious magical girl. However, one day, he comes across a manga featuring illustrations strikingly similar to the magical girl from his dreams. Determined to uncover the cause of his phobia, he contacts the manga's author. But this marks the beginning of a descent into a dark, profound despair.
The manga centers around Ginjirou Manda, a loan shark business man who is affiliated with many Yakuza gangs in Osaka. He charges an interest rate called toichi—10% more interest every 10 days, or 365% every year. Thanks to his unrelenting money-collecting tactics, he is feared as "Minami no Oni" or the "Demon" of Osaka's Minami business district. Even when his borrowers tries to scam him, he always finds a way to make them pay his money back.