An unremarkable high schooler faces the brutal trials of a harsh fantasy world without combat prowess or magical gift. Armed solely with knowledge from modern Japan, he transforms survival into opportunity, converting his intellectual advantage into wealth. Beginning as a humble secretary and merchant proprietor overseeing a retinue of companions, he ascends to become both a decorated knight and aspiring hero. Defying the odds stacked against him, this clever protagonist proves that wisdom and determination can overcome any obstacle in his quest for legendary status.