Azumanga Daioh (2009 Print) - Vol. 1 Ch. 2 - May

[MangaDex]

 

[Gazz91]

Pretty sure the student who got the bike stolen by Yukari was a guy in the original... I wonder why that was changed...? The scenes with male students were scarce to start with =P

 

[StrawberryDesign]

In this version, it's Chihiro (Kaorin's friend, the girl Chiyo helps in the first chapter). My guess is that he wanted to use an established character rather than a random nameless dude.