I somehow feel that Lalalalala and TOUCH DOWN are the b-sides and IS THIS TRAP is the one that finds its way on the album. Of course, if this single is similar to 4 hot wave and 4 TIMES, all songs will be on her next album (which I don't mind at all, of course). :3
I wonder if she'll release a winter ballad single next since there is Koishikute that's already out.