World Development System - Chapter 20

(Naruto + Single Heroine Tsunade + Romance + Action)A failed author transmigrates into the Naruto world, becoming the younger brother of Konoha’s White Fang, Sakumo Hatake, and the uncle of Kakashi. He gains a cheat ability—enhanced cellular activity.Coincidentally, just before the Second Shinobi War, he participates in a Jonin meeting where he supports Tsunade's proposal ahead of Dan Kato, marking his first encounter with her.From then on, he launches an intense pursuit, winning her heart during the war.Tsunade: “Kawakaze, why do I keep losing to you?”Kawakaze Hatake: “Because I’d like to live a few more years...”Kakashi: “My uncle is amazing, I’m his biggest fan!”Kawakaze Hatake: “Keep it low-key, keep it low-key.”

Blessed with unlimited mana, Noah travels the worlds and sees rampant corruption and injustice.

Astrid dedicated her life to Leon, believing in their love, their pack, their future. But the devastating return of her sister, Clara, as Leon's destined mate, shatters Astrid's carefully constructed world. Betrayal cuts deep, leaving Astrid stripped bare and forced to confront a horrifying truth: her loyalty was misplaced, her sacrifices meaningless.Just as despair threatens to consume her, Kaeleen, a magnetic and rebellious Alpha from a rival pack, storms into her life, igniting a forbidden passion that challenges everything she thought she knew. He offers her a chance to escape the suffocating control of her past, to claim a life of her own, a life where she is the priority.But Leon won't relinquish his prize so easily. Obsessed and dangerously possessive, he unleashes a storm of violence and manipulation, determined to drag Astrid back into the darkness. Now, Astrid must make a desperate choice: succumb to the chains of her past, or embrace the dangerous allure of a love that could save her... or ignite a war that will consume them all.

In the waves of steam and machinery, who could achieve extraordinary? In the fogs of history and darkness, who was whispering? I woke up from the realm of mysteries and opened my eyes to the world.