I mean the font of the biggest purple letters.
It says あっちこっち幼稚園
I've searched in google and Whatthefont with no results.
Point to look at:
- The hiraganas あ and こ have arrows added.
I checked the major japanese font makers (C&G, DynaCom, Fontworks, Iwata, Morisawa, Motoya, Screen, Typebank, VDL) catalogs, but couldn't find a match. Most probably it is a "design" (デサイン書体, not gothic or ゴシック) font, with some edge rounding. The arrows were most probably added later, because one of the main visual elements of the anime were arrows.