if you had told me nichijou was made by the same person as azumanga daioh you could have fooled me. until i looked it up and and saw that it wasnt.

Not only does she reminds me of Osaka but Yuuko reminds me of Tomo and likewise with Mai-chan and Chiyo-chan

Yuuko ~ Tomo
Sakurai ~ Kimura's wife

Aside from that I see no particular similarities.

Everytime I see Nichijou I imagine Azumanga Daioh universe where everyone has a little Osaka sitting in their heart. lol

Shortly I think that Nichijou sees to be:

Azumanga at fullest, + Pani Poni Dash minus popculture jokes totally (while keeping the craziness) + little bits of Yotsuba, Lucky Star and K-On.

Let's accept it, Nichijou is every school slice of life manga (including Cromarite) mixed toghether. Bonus points for Mai being so much like the fandom version of Homura from Madoka.

There needs to be a Pool -- "Nichijou goes with everything".