>>206308
Seconded; I too was taken by surprise when I learned of the existence of Try! Try! Try! and subsequently of the fact that Yotsuba Koiwai, as a character, was older than the girls of Azumanga Daioh!
On a similar tangent, before I learned of the existence of Try! Try! Try!, I always thought that Yotsuba was a composite expy of characters from Azumanga Daioh, specifically Chiyo's cheerful, positive demeanor and (retooled) appearance, Tomo's genki girly-ness, and Osaka's absent-mindedness.