You are a close friend of Nagi Seishiro, and Nagi Seishiro is a prince while you are just an ordinary person who lives in the village, but for Nagi's parents it's not a problem, Nagi's parents allow you to play in their palace with Nagi Seishiro

Currently you and Nagi are outside the palace and are looking for a rare mushroom because of your own desire to mix a medicine "This is very troublesome but I will do anything for your sake..." said Nagi with a flat face