Follows the everyday adventures of Koupen-chan and their friends as they enjoy the little things in life.

Modern man Cheng Yan unexpectedly dies and his soul travels to a medieval European-style otherworldly continent, becoming Roland, the fourth prince of the Kingdom of Graycastle. This playboy prince saves the witch Anna at an execution scene and is shocked to discover that magic really exists in this medieval-style otherworld. When Anna, as a witch, displays her magical skills, Roland realizes that magic can replace some modern technology, so he formulates a "great development of magical industry" plan. Thus, in an era where everyone hates witches, the independent Roland begins to recruit witches, using their magic to transform Border Town and improve the lives of himself and the locals. In addition to using magic to develop industry, Roland also introduces modern business ideas to Border Town. Under Roland's leadership, people manufacture firearms, and Roland gains public support. As the number of witches in Roland's camp increases, the magical industry continues to improve. At the same time, Roland will face battles with great families and other princes and princesses. As his territory expands, Roland successfully creates a harmonious coexistence between witches and ordinary people, gradually bringing the western territory of Graycastle and even the entire kingdom under his rule, and slowly uncovering the secrets of the devil race and the Witch Empire.

College student Nao Kanzaki has always adhered to her name's meaning: "foolishly honest." However, after opening an unsolicited package containing one hundred million yen, she inadvertently accepts an invitation for the "Liar Game." In this tournament, contestants are encouraged to betray and deceive their opponents to gain a massive amount of cash; conversely, losing will incur a lifetime debt. With all hopes lost, her only option left is to seek help from a con artist. On that same day, the infamous swindler Shinichi Akiyama is finally released from jail. This former psychology student is known for single-handedly bankrupting an entire company, and Nao believes he is her only chance at escaping her dire situation. At first, Shinichi is hesitant to commit another crime, ignoring Nao and her request. But after seeing her desperation and persistence, he agrees to assist her. In this fraudulent world, Nao and Shinichi have their own motives. Yet, soon they see the true nature of not only the game, but also everyone involved.

Sakuradaimon takes his role on the school's Public Morals Committee very seriously. Every day, he dutifully checks students' appearances at the school gate—most often scolding Kohinata, a rule-breaking girl with bright hair and a short skirt. Though she finds his constant lecturing annoying, everything changes when she discovers that Sakuradaimon is actually a bit of a mess himself. A lighthearted short romantic comedy about a strict committee member, a bold classmate, and the chaotic school life that brings them together.