A-channel is about the daily life of four girls - Run, Tooru, Yuuko and Nagi. It's based on a four panel (yonkoma) strip, and the chapters of the episodes aren't extremely long. It's a quite cheerful show to watch and it doesn't force anything on you. It's just daily life events.
There is an insert song, beside the opening and the ending in every episode, with voice actors singing, and the song has to do with the episode it's in.
Run is an airheaded blond second year. At times she blanks out and her friends have to save her from hurting herself. She has known Tooru since kindergarten and the two of them are best friends.
Tooru is a short first year. She's really attached to Run and doesn't like when people are trying to make a move on her, so she interrupts. She has trouble to find clothes that fit her because she so skinny. At first she didn't like Yuuko, because her first impression of Yuuko was when Yuuko and Run were in a situation that could be misunderstood, from Tooru's point of view.
Yuuko is in the same class as Run and has moved into the twon. She met Run at the entrance exams. She's a bit of a scaredy-cat who often gets teased by Tooru, usually out of jealousy of Yuuko's figure.
Nagi is also in the same class as Run. She's conscious of her weight and often tries different diets. She's intelligent and tend to make quick remarks to her friends. She hates both hot and cold weather.
I give this anime a 5 for it's cheerfulness. You don't have to hardcore watch it, since it's kind of simple. It makes you laugh
