Salad Days is a compilation of stories. Though, there seems to be a main story to it-- in which the writer focuses on and continue, since most of the stories are one-shots.
The stories are sweet and great. They give you this heart-warming sensations and some stories could bring tears to your eyes.
The art is also wonderful. I think the artist did great on the shadings and bringing the art to seem so alive.
One of my all-time favorite manga. I would gladly reread it and reminisce on the days where I first read this manga.