24 Jikan Eigyouchuu

From Shinmakoku Scanlations:

1-2) 24 Jikan Eikyou-chuu
Nakamichi works in the 24-hour convenience store on Sano's way home from school. Nakamichi is baffled by the amount of lollipops Sano buys everyday! But he gets very used to seeing Sano around, that when suddenly Sano stops showing his face at the store, he misses him! What happened to Sano? And why buy so many lollipops?

3-5) 24 Jikan Renai-chuu
Yoshino, an ordinary guy works at a convenience store where he meets the beautiful Yagami-san. He overhears Yagami-san having an argument over the phone with who he assumes is his girlfriend. What will Yoshino do when he sees Yagami drunk and collapsed outside the convenience store, and hears him whisper a guy's name in his sleep?

6-8) Extra: 24 Jikan Eikyou-chuu