You see a tree with a helicopter and a jackhammer tied to it. You look closer, because this is an odd sight, and realize that there is a sign here too. It's telling you to beware of helicopters and jackhammers in this woods. It's a poorly made signpost!
As you look at this weird signpost you notice a button. You press it because it will supposedly tell you more about these dangerous helicopters and jackhammers. Instead, it just yells out in a loud obnoxious voice: HEYO (ひょう)!!
Currently there are no similar looking kanji which exist in the WaniKani learning system