Cute concept, and awesome art! Loved the characters that were introduced, kept getting beat by Daria until I discovered that you can apply as many stickers as you wanted on a single item (assume it's not supposed to be allowed, but I couldn't help myself haha). After them I ran into a<NULL> opponent :p
Overall I had a really great time, and played for quite a while! The sticker gesture is very satisfying too, had a lot of fun with that alone haha. Worth the effort there, it works perfectly :)