There is minor difference between E-shop version and SB(both JP and L translated) version.
In SB version, the syringe loving nurse is cross-dressing dude (Jens in English, Jirou in Japanese).
In e-shop version, She is just a syringe loving nurse whose hobby is black magic.
About extra stuff added (collecting secret item) in game...
When skeleton Johnny is revived with mushroom, he shows heart statue in his room.
That statue has hint for first secret item: Heart Stone.
Hint "it is hidden underwater. there are many fish."
When you get back with heart stone, Johnny shows you more statues.
more riddles, more hidden items...
(I haven't found all the secrets yet.)
Anyway, don't forget to translate those riddles too (it's not in L's translation).
In e-shop version, She is just a syringe loving nurse whose hobby is black magic.
About extra stuff added (collecting secret item) in game...
When skeleton Johnny is revived with mushroom, he shows heart statue in his room.
That statue has hint for first secret item: Heart Stone.
Hint "it is hidden underwater. there are many fish."
When you get back with heart stone, Johnny shows you more statues.
more riddles, more hidden items...
(I haven't found all the secrets yet.)
Anyway, don't forget to translate those riddles too (it's not in L's translation).

I had to remove the logo from the modified font for copyright reasons :/
Expect the patch to release later