How the Mochis were formed
One stormy night a boat being shipped from china to the US carrying a bunch of cats and dogs was crossing the Pacific Ocean. The ship, blown by the storm, was carried to a forbidden, untouched slot of water. People never went because boats disappeared there and never returned. What was actually there was a wormhole leading to a far away dimension called the Wagashi Dimension, landing right in the middle of an ocean on the Dango Planet. There were villagers living there, people who discovered the place and lived there, for it was a paradise. Food grew everywhere, the entire planet and everything on it was made of sweets and assorted foods. The food there had no effect on the people but had an odd effect on the animals who were on the ship, and were never delivered. Their tails grew curly, sprouted wings, and became edible. Their bodies were colored and had odd swirled patterns, and their tails held the foods they were based on. The 'originals' died very quickly, and it is believed it was because they didn't have their soulstones: They had an even shorter lifespan than regular cats and dogs. And, at the very start, the villagers ate the mochidogs to see what would happen. The Mochidogs couldn't reproduce but as soon as the mochidogs were formed pods appeared all around on planet Dango, holding baby mochis. It was if the land had to be introduced to the animals to start growing them. The mochidogs formed from the pods were the same as today's mochis. Now you have discovered the wormhole and the Wagashi Realm. Like all villagers, you try to capture a Mochi to call your own. Decide the rest for yourself.