Unreliable Master and Apprentice

Travel through the fantasy world in a traditional and unsurprising way! But why does everything here look so unreliable? Traveling through time and discovering that there is an old man inside you? In the end, this old man is not very powerful at all? An old man who has been practicing for eight hundred years and still building foundations has the nerve to be my master? ? What else does this *system say about two wishes being fulfilled at once? Can you be more reliable? ! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.