Mushroom family in another world

The story is about a single mother and her two children reincarnated into another world, where they become...mushrooms Together they rebuilt the village in the countryside. Together with people in another world. But it seems that life in another world is not as simple as the mother imagined, as forces collide with each other. A mother and her children need to do more to survive in this world. Because nothing in life is beautiful and peaceful forever. It will always get dirty someday.