I Have Medicine - Chapter 21

Our straight (?) bottom woke up ten years into the future and found himself on the bed of his childhood friend… At the start, the bottom was shocked to his very bones, but he soon quickly accepted this premise and found the whole situation to be rather amusing. Precisely then, the bottom once again went back to his timeline — back to when he and the top were just platonic childhood friends.

Landmines include but are not limited to: Sweet & naive bottom, a president story, logic is dead, slow-progressing romance, the protagonist’s name has too many character strokes, the names are hard to pronounce, too many gay characters…

- Description from novelupdates

Li Jizhou traversed to another world, fought with all his might, always battered and bruised, and ultimately failed to charge the Golden Core with a Lower-grade Spirit Root, resulting in his death and soul's dissipation.It wasn't until his second life that he realized the reason he could travel to this world was due to the Reincarnation Treasure Mirror he had fortuitously obtained, which could not only reincarnate his soul but also enhance his Spirit Root based on the performance of his last life.“If I can achieve Core Formation, I can gain nearly five hundred years of lifespan. In the next life, I can add five hundred points to this life's Spirit Root base, making top-grade talent possible in the future... again and again, as long as I can reincarnate for three more lives, opening with a Celestial Soul Body Spirit Root, it's at my fingertips.”

With peerless medical skills in one hand and unmatched Kung Fu in the other, bearing the memory of the Medical Divine, I dominate the city as the god it kneels to. I am here, so I decide your fate between life and death! I am here, so I am the heaven that dictates your destiny!

(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.”