A few weeks ago 7/11 had a sort of stamp rally involving the popular kids show Kamen Rider. Every store had a different stamp so kids would have to bother their parents to take them all over. If you collected enough you could get prizes.
I thought the ink stamps were really nice, and me being basically a big kid, I decided I would get one too.
I wonder what the clerk at the store thought when he saw a 33 year old foreigner getting a Kamen Rider stamp. Here’s a scan of the whole collection. I only managed to get one, because I’m old and busy, not like kids.