Chair
This tree is very odd, to say the least. The shape is all crazy, like a lightning bolt stuck into the ground, or something. Oh wait, look at this. I can sit on it really nicely. It's just like a chair!
Imagine this odd tree chair being the most comfortable chair you've ever sat on. It's shaped perfectly for you, and the moss makes it soft. Wow, what a chair.
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But, this odd tree chair is also home to an eagle (い). It swoops down upon you as you sit down, gouging your eyes out.
Feel the fear and regret. You should have known not to sit in this "chair". Mother nature never forgives, and now you don't have eyeballs.