User blog comment:Kiadony/Fullmetal Alchemist: Prototype manga/@comment-865752-20110725175900/@comment-1746153-20110725180524

I don't know, I found it accidentally by following the link to Naruto raws. This actually looks like a, well, prototype (something old that Arakawa drew that would later evolve into FMA manga) - notice the similarities to the actual manga's Reole arc. Though I wasn't able to find any really clear info on what it is >.<