sentences:  The founder of the band, Kiyokazu Sekine, is the son of Aimachi's founder and continues to serve as the group's director.In 1998, the Aimachi marching band became the All-Japan National Champion in the All-Japan Marching and Baton Twirling championships for the first time in their history.They have gone on to win in January 1998, 2000, 2001, 2003, 2006, 2007, December 2008, 2009, 2012, 2015, and 2018, and performing in exhibition in December 2007 and 2010.