Tighnari already smokes sometimes but his interest in mushrooms might be the thing that will make him go downhill. Mushrooms can be used for many things like cooking, healing injuries, helping with mental instabilities, or fun. After tasting so many mushrooms, the euphoric feelings he experienced were so intense he couldn't help but go and ″experience″ with them a bit more. It turns out it might ruin him completely with no way back.