In Kingdom Hearts III, MP Walker is a support ability that costs 1 AP to equip. While active, the user restores 1 MP 5 seconds after beginning to walk or run, then begins to periodically gain additional MP based on the number of abilities equipped, with one ability activating every 0.5 seconds and two abilities activating every 0.33 seconds. MP Walker has no effect on MP recharging speed.
Learning MP Walker
Kingdom Hearts III