I Picked Up This World's Strategy Guide

Sana, the daughter of a tool shop in a corner of the castle town, went out to the forest to pick medicinal herbs as usual in order to make recovery potions for the store's products. There, Sana picks up her mysterious book. Because she read the strategy book, the daughter of the tool shop, who shouldn't have anything to do with the story, is greatly involved in the story of the game...?! Another world romantic comedy adventure fantasy!