Batmo cave is full of... Batmos, there a few Chobin Hoods and Lime Slimes here as well, to get through, go North then North again, in this room there will be nothing until you reach a certain point, then three Lime Slimes will be behind you, your weapons don't leave a scratch, so it is advised that you move on East, if you want to kill them, press
to change to the Heroine, then hold down
to unleash Wisp, then let it out and it will attack them.
In the next room, there will be four Chobin Hoods, kill them for a reward - the Bow, you can select the Weapon by Pressing
in the ring menu, they will inflict damage on the Lime Slimes (from a distance) and are a jab weapon.
When you go east, you will encounter a Metaball, there are three types of these, Slash, Bash and Jab, you can tell what type they are by the way they attack you, this one is Jab so use your bow. Then exit to the South
This is the final room, it is suggested that you switch to the heroine and clobber the Lime Slime with Wisp (if you have enough MP), then go left and round with the Hero to clobber the Chobin hood with your sword, then switch to the bow and beat the Lime Slimes, then go down, kill the Chobin Hood, then go to the Metaball, it is a bash this time, so switch to the Heroine and use the staff to kill it. then exit to the East