Misaki | Way of the Samurai 4 OST: 11 - Sisters' Funtime @Misakiu | Uploaded January 2015 | Updated October 2024, 4 days ago.
I don't own this, all rights go to Acquire and the regional publishers (Spike, XSEED Games and NIS America)

Also known as "Normal Battle 2" but at least to my knowledge it's never used as a battle theme.