One day, my wife picked up a stag beetle and decided to keep it.
At first, I didn't know how to keep it, so I put it inside a cardboard box and gave it some peach seeds or something.
The stag beetle was stuck on the peach seeds all day and did not move.
I thought he was too weak because he was not moving much.

I looked up stag beetles on the Internet.
Apparently, stag beetles like fallen leaves, trees, and dark places.
There were no fallen leaves or trees near my house, so I bought a Marukan Beetle and Stag Beetle Easy Breeding Set from an online store.
I immediately put rotten oak wood in the breeding case and placed insect jelly in the middle.
Then I put the stag beetle in it.　I left him alone for a while.

A few hours later, I looked at the case and the stag beetle was gone.
Where is he?
It's strange.
I examined the sides of the clear case.
He was hidden in a rotting oak tree!
The surface of the rotting oak is flat!
He is a ninja!