The Japanese even have superior beer can technology (trust that this matters when you are drinking with pals!)
It says, "Why don't we have this in the US? The little dent makes opening the can so much easier on your fingers."
By the way, that's a Sapporo Beer. The two best beers are Sapporo and Yebisu (IMHO)...
Thanks to Bits and Pieces for being on the alert!