Atom tells a story
Click the dragon.

Clicking other characters leads to different areas.

There is what appears to be a game in the following link. Click a button on the keyboard, then click the lower right green button. Click the button under Atom, then try to find the answer among the six buttons to Atom's left.
If you see Hyutantsugi, your answer is wrong.
http://shop.tezuka.jp/shuwa/yubimoji.html :wahah:
I finally found one correct answer. But Atom's expression is just not funny:
