u/AdOld2151

It's an anime I watched in teen and it has modern(around 2010) animation style althought i remember some major plot point I can't search it at all. Mc is a normal modern high-school boy then he met 4(may be 5?) small humanoid creature in his backyard. Mc like gachapon and I think plot is centred on gachapon balls. Monster come from gachapon ball and these 4 or 5 companion transform into ranger-like, normal human-sized form to defeat them. And THE OWNER OF GACHAPON SHOP IS FINAL BOSS, and he is defeated with the release of all brethrens of 4 or 5 companion trapped in gachapon ball by him.