It's amazing that people still doesn't realize they are part of Susano. They are mentioned apart to explain Susano's whole battle system and to show the parallels between Susano and the legends.
Just because in the legends were separate items it doesn't mean in real life they only exist as part of Susano's jutsu.
did he get them off some mountain. or did some tengu give them to him. spirit weapons seem kind of hard to find. if oro look all his life and could find one
Thats possible too. What i want to know is, how the hell did Madara lose to the first, from what I have read so far just a plain MS gives you three uber fuckin powerful moves, one that deflects all attacks and makes you invincible, and you get another move once you get the EMS. Unless he lost just like Itachi did.