I say that if you like it you should get it. I took a look at the sticker but I still don't really know what Domo Kun is other than what the decal description said. lol
I am gonna put all the brand logos I have installed on my car (mods) in the future. I have them all in a little plastic baggy just waiting. Thinking about getting a big NISMO and Falken Tire sticker for the front windshield and the other for the back.
Decals really just depend on what you want. Everyone is going to have their own opinions.
What is domo kun? I have never heard of it before.
But as Code said, if you like it then buy it. You can always take it off in the future if you get bored of it.
I think my next little purchase will be a Hello Kitty decal for the rear windshield