Naruto took out another six kunai and hurled them at Tsunade while forming hand seals. "Shadow Clone Jutsu!" He created two hundred clones, all of which attacked Tsunade at once. After dodging his kunai, Tsunade laughed at the swarm of clones. "Your name is Naruto, right? You think you can win through sheer numbers? You're too naive, Naruto. I'm not some weakling you can overwhelm just by throwing enough people at me. Still, your chakra reserves deserve some praise. Then again, you are a descendant of the Uzumaki Clan. It makes sense that your reserves could rival those of our Senju Clan."
Naruto wasted no words on her. All his clones rapidly formed Rasengans, and two hundred glowing spheres lit the darkened street as brightly as day. Tsunade exclaimed in surprise, "Jiraiya, I never thought you'd teach him the Rasengan, too. That was reckless of you. If Naruto weren't a member of the Uzumaki Clan, he could never withstand its chakra consumption."
Jiraiya smiled wryly. "I'd have liked to teach him, but he didn't learn the Rasengan from me. When Minato sealed the Nine-Tails inside Naruto, he also sealed some of his own chakra and Kushina's inside him. Minato taught Naruto his sealing jutsu, the Rasengan, and the Flying Thunder God."
Understanding dawned on Tsunade after Jiraiya's explanation. "So it was little Minato. If it was his decision, I can understand."
Hurt and indignant, Jiraiya protested, "How come it's understandable when Minato teaches him, but reckless when I do it? This double standard really hurts, Tsunade, you know that? You shouldn't treat people like this. You've broken my heart." He put on a wounded expression, as though the whole world had abandoned him.
Tsunade replied impatiently, "Get lost. Stop being an eyesore. You're decades old. Do you think you're still