Naruto: Pursuing Tsunade

(Naruto + Single Female Lead Tsunade + Romance + Passion) A struggling author travels to the world of Naruto, becoming the younger brother of Konoha's White Fang, Kakashi's uncle, and gains a powerful ability - Enhanced Cellular Activity. Just in time for the pre-Second Great Ninja War Jonin meeting, he supports Tsunade's proposal before Kato's betrayal, and meets her for the first time. He then launches an intense pursuit, capturing her heart during the Second Great Ninja War. Tsunade: "Kawafune-kun, why do I keep losing?" Hatake Kawafune: "Because I want to live a few more years..." Kakashi: "My uncle, I'm blown away." Hatake Kawafune: "Keep it low-key, keep it low-key." ... The introduction is weak, so please move on to the main text, daily life + passion, and I hope all readers enjoy it.