Poputepipikku

Briefly about Poputepipikku manga:

Poputepipikku is a comedy about two contrasting middle school girls who decide to become friends. Their names are Popuko and Pipimi, they're both 14 years old, and they've known each other since 3rd grade. They were first drawn in 2007 by Q-Gaku Noya (鈍谷克己), but they got so popular that their own doujinshi circle was formed!