Osakana wa Ami no Naka
Fish in the Trap
おさかなはあみの中
Osakana wa Ami no Naka is a story based on manga by Nekokichi Ranma about Tsukamoto Yuuji, a young businessman and great swimmer, and Matsui Takahiro, who is still attending school and is also a beginner in swimming.
(Source: AniDB)