Battle Spirits: Shounen Toppa Bashin

Battle Spirits: Shounen Toppa Bashin is an anime series that aired from 2008 to 2009 as the first series of the Battle Spirits franchise.

The story follows Toppa Bashin, The series follows the daily adventures of 6th year elementary school student, Toppa Bashin, who has a mysterious red stone pendant from his father. One day he meets J Sawaragi, the consecutive tournament champion, who possesses a similar white stone. J challenges Bashin to a battle in the alternate universe, Isekai World, where spirits are real.

OP
Toppa is at a swimming pool.

Episode 1
Toppa changes his clothes.