"The Continuing Path towards Radiance" (輝きへと続く道, Kagayaki e to Tsuzuku Michi, Viz: The Path to Light) is chapter 573 of the original Naruto manga.
Tobi is confused by Naruto's claim of learning difficult names, which Naruto teases him for. Guy and Kakashi discuss now Naruto's progress is making them feel old, though not that old. Tobi begins to sweat, but believes it to be the rain that's starting to fall. Tobi gets a strange feeling from Naruto, and concludes that the war will make everything irrelevant. At the Allied Shinobi HQ, Naruto's use of Kurama's chakra was felt, though they also feel something else. Ao relays to events to Shikaku, who wants to use it to raise the army's morale all at once, despite the strain it would cause to communications. Naruto's friends from Konoha all rush towards his direction, intent on supporting him. Elsewhere, Sasuke also walks towards the battlefield as a thunderstorm begins.