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)

From Adachi's Universe:
Slow Step follow the adventures of schoolgirl Minatsu as she looks for a man and tries to stay on top at school. She's got the school bully to worry about, two potential suitors, a pervert for a PE teacher, and a gang of criminals in hot pursuit.