I can't understand crap, but I guess it's some kind of promotional material given as a present to some people,
OR you'll get to try and get them in one of those "UFO catchers" or claw vending machines in the many many (but, thanks to poor sales and pachinko laws, not that many nowadays) SEGA amusement centers or arcade games throughout Japan.
It doesn't look like they're selling them over SEGA Direct (which also may or may not disappear since I don't understand shit of
this page), so we'll probably have to wait until they show up on eBay, or someone that frequents this forum and travels to Japan has some pretty good
Puyo catching skills.
Regarding the topic, I could think of this item's implications like some kind of brotherly relationship between Sonic and Tails given that it's unprobable anyone could have a meaningful romantic relationship at the age of eight... but fuck, why Valentine's Day, or White Day (which is an even more incriminating implication)?!
Just you wait until March and pay a visit to Sonic Channel's
Fan Art section, it may get really gay and/ or lesbian. Put your goggles, you can expect some furry art to show up too.
EDIT:
Dasher wrote:Japan always gets all the good stuff

Oh. Man. Totally super-duper kickass cool. :(