Musashi no Ken - Tadaima Shugyou Chuu/Secrets

Key
The first is one of the most impressive, the key, get it here

It will quickly move you forward to the graveyard, be warned it does skip a health item

Onigiri/Riceball
In this training stick there is

a hidden Onigiri to up your health

Shoes
Located in this signpost

There is a shoe which will significantly speed you up
 * Note this carry's on to all levels till you lose a life