Complex sentence: Adachi won the role of Eiji Kikumaru, the acrobatic 3rd year regular of Seigaku Middle School's tennis club and from 2005 to 2006, he became the third actor to play Eiji in the The Prince of Tennis Musicals.
Split into simpler sentences: Adachi won the role of Eiji Kikumaru, the acrobatic 3rd year regular of Seigaku Middle School's tennis club. And from 2005 to 2006, he became the third actor to play Eiji in the The Prince of Tennis Musicals.