The hero king Inglis—who dedicated his entire life to building his country—is now approaching death. To award him for his honorable achievements, the goddess Alistia appears and grants him one wish. Having never been able to master the blade, Inglis asks to be reincarnated in order to do so. In a blink of an eye, Inglis finds himself born in the far future as a daughter of the Eucus noble family. Six years later, Inglis is discovered to be Runeless—incapable of utilizing the runes that enable the use of magic in this era. She is therefore ineligible to become a knight. However, this fits in well with Inglis' plan: she instead decides to become the squire for her cousin, Rafinha Bilford, allowing Inglis to focus on pushing her limits. For Inglis, the challenges this familiar yet different world has to offer are instead opportunities for her to hone her skills—and possibly become an extraordinary squire in the process.

Self-professed "home security guard" Mahiro Oyama has not left his home in years, secluding himself in his room playing erotic visual novels. This depraved lifestyle causes his prodigious sister, Mihari, to worry about his well-being. In hopes of solving this problem, she devises a plan to rehabilitate him back to normalcy. The first part of Mihari's plan is to concoct a medicine that changes her brother's biological constitution into a bona fide female, much to Mahiro's vehement dismay. Stuck in this predicament, Mahiro has no choice but to live out his life as a cute girl until the effect wears off—if it ever does.

The story focuses on high school girl Nagisa Yukiai who lives in a seaside town. She has believed her grandmother's story that spirits dwell in words and they are called "kotodama" (word spirit). One day, she strays into a mini FM station that has not been used for years. As an impulse of the moment, she tries to talk like a DJ using the facility. But her voice accidentally broadcasted reaches someone she has never expected.

For many years following the North Ambrian Disaster, North Ambria has been known as the poorest region in Zemuria. After the state suffered a major loss due to the mysterious Salt Pale turning citizens and buildings into salt, the economy has never truly recovered. Out of necessity to secure foreign investment for the state, the former state military has turned into a group of mercenaries known as the Northern Jaegers. Wishing to join the largest group of mercenaries on the continent, Lavian "Lavi" Winslet, a promising rookie, enlists with the Northern Jaegers. Although she has only been with them for half a year, the reserved but capable Lavi Winslet is well respected by her peers. When Lavi and her team are tasked with gathering information regarding the Imperial Hero of Erebonia—a new threat to the state—she discovers that there may be more to the continent's intricate politics than meets the eye.