Soulstones
Soulstones allow the Mochi to be immortal. Without them, the Mochi is mortal and can be eaten to die, or die of age (similar to the gen1 Mochis). If a mochi looses their soulstone, or their soulstone is stolen (which they sometimes are; they are priceless and rare) then the mochi will die almost immediately.
Soulstone bells are only usable for Mochi Cats or baby foods.
Soulstone bells are only usable for Mochi Cats or baby foods.
Ties
The name is deceiving; they are not literally 'ties' in the sense of modern human ties. They simply tie the soulstones to the mochidog. their ties are non-removable and the mochis are born with them. ties can be anything from bandanas to hoodies.