Immortal Techza who decide to pass on and reincarnate so they can meet each other for the first time again and fall in love once more (because Techno, the romantic he is, has a theory that they would find each other on every life that he really wants to test) and they write all their memories and secrets in a bunch of diaries and manuscripts that they hide all over the world so they can find them and have a fun little treasure hunt their next life
They tell no one of the diaries, except their one immortal friend Dream, who is also a romantic so he loves the idea, but immediately sees the flaw that languages can go extinct and paper is very fragile, so he dedicates his next idk how many thousand years to finding the maps and hunting down every single book and carefully archiving all of them and writing academic papers on every artifact and the language so Techno and Phil can actually read their stupid 1000 year old love poems and not just have an untranslatable piece of ripped up paper