These Days just blows me away in the right mood it demands. It's a beautiful journey, I really like it's colorful apmostphere and all the ideas in it. Very impressive one.
Crazy Battle and Business Town honestly seem unfinished to me, however, I really appreciate some nice chord progressions in the middle of them. As for Crazy Battle, I guess it's kind of cheesy, but that's absolutely subjective.
Apart from that Child so far is a bunch of cliches, it's a funny song - and the EP is definitely a good one.