I don't think so, because during the year they would still have the same age, but they are 1 year apart. I think they are brothers with 1 year difference that look pretty much almost the same for this reason they are called "twins".
? XD
had to write it here XD bcs tha other dude who was talking about ages right before your post kept deleting this reply, some strange dudes out there... （￣へ￣）
But after I wrote this a miracle happened....now the post is back trolol
┗( T﹏T )┛
Lmao K xD
OMG THANK YOU SO MUCH TRANSLATOR!!