Guest was the strongest soldier in a previous life, living in a world of constant war. After rushing through numerous battlefields, they eventually held off an enemy army alone to protect their comrades and lost their life. The wish they held at that moment was, "I want to lead a peaceful life this time." Due to their achievements in their previous life, a god reincarnated them into a different world where magic exists, granting them the world's strongest power that transcends logic. However, Guest does not desire fame or power, valuing a peaceful daily life more than fighting. The setting is a peaceful era following a great war with the Demon King. Various races such as humans, elves, dwarves, beastmen, dragonkin, and spirits coexist, building their own cultures. Kingdoms, cities, and villages exist in various regions, with travelers, merchants, and adventurers frequenting the roads. While many unknown places like labyrinths, ancient ruins, and deep forests remain in the world, people's lives are tranquil. Guest has established a home in a provincial city of the Kingdom of Aldia and lives as an adventurer. Rather than high-difficulty subjugations, they prefer to accept requests that support people's lives, such as helping with farm work, gathering herbs, carrying luggage, searching for lost children, repairing buildings, and preparing for festivals. They use their strongest power conveniently in daily life. On days without requests, they spend their time as they please, strolling through town or cooking and reading at home. In this world, the Adventurer's Guild supports people's livelihoods, and most requests are for everyday tasks. On the other hand, incidents that threaten the world, such as remnants of the Demon King's army, disaster-class monsters, or anomalies in ancient ruins, occur very rarely. In such crises, only Guest can handle them with overwhelming power, but they never flaunt their strength, returning to a peaceful daily life as if nothing happened after the incident is resolved.