Naruto: The Nine-Tails Fox in My Second Life

[Transmigration + no System + no pairings + original characters + classic wish fulfillment + characters stay in character + Minato-focused early on, transitioning to Naruto later] On the battlefield, Naruto and Sasuke faced the formidable Ōtsutsuki Isshiki, who wielded the power of Karma and could easily overpower them in Six Paths mode. Kurama, the Nine-Tails, had already forged a bond with Naruto that would last a lifetime. To protect both Konoha and Naruto, he willingly helped Naruto activate Baryon Mode. 【Is this as far as we go...?】 At last, Kurama's life force was completely spent, and Naruto left Baryon Mode. After saying his final goodbye to Naruto, Kurama closed his eyes in exhaustion. 【We've never been apart since the day you were born, have we, Naruto? From here on, you'll have to walk your own path.】 Just as Kurama thought his soul was about to depart for the heavens, a powerful life force suddenly surged through his body. When he opened his eyes again, a full moon hung before him, and beneath it, Minato Namikaze had just rescued Kushina from danger.