This only works when you select a horse at the inventory screen. While in the battlefield, when you are leaving your horse at far distance, press Down to return your horse to your side. Note: Your horse might not be unable to reach you if there is an object blocking its way.
Successfully complete Musou mode to unlock the Expert difficulty for Musou mode and Free mode.
(* means:) Playable in Musou Mode, Free Mode and Challenge Mode. Others playable in only Free Mode and Challenge Mode.