Touch is a shounen story about two twin brothers, a pretty girl next door, and that good old pastime of baseball. The manga was written by one of the most well known manga-ka out there, Adachi Mitsuru in the early 80's (1981-1986). He's a wonderful writer who tends to write stories that are related to baseball and Koshien, the stadium where the All High School Baseball Tournament is held.
(Source: MangaProject)

Collections of short stories:
Volume #1:

Volume #2:

Volume #3:
-Ace of hearts
-Teens
-Wind and Leaves
-Hirahira's stories

Volume #4: