Menma and Hashirama, what happened in Teyvat

When a senior "?" and his good brother died together due to an accident, they became the enhanced versions of "Uzumaki Menma" and "Senju Hashirama" respectively, and then accidentally broke into the Teyvat continent, which is full of conspiracies and dangers, but also has many beautiful things. What kind of deeds will the two of them create in this world and what kind of legends will they leave behind? Let's see how these two people from another world who have the power of the "Ninja World" will interpret their own stories on this land. (As much as possible without swords, will use the greatest effort to break the tragedy. After all, this kind of second creation is born...