Lately, I can't help but notice that a lot of the names of characters and techniques used in Naruto seem to be derived from folklore and/or based on gods and the likes. Some samples would be:
- Izanagi - a deity born of the seven divine generations in Japanese mythology and Shinto
- Jiraiya - originally known as Ogata Shuma Hiroyuki, is the title character of the Japanese folk tale Jiraiya Gōketsu Monogatari
So, why are so many of the names used in Naruto derived from such things? And is this only common in Naruto, or does it happen in other series as well?