The Namgung Warrior Reincarnates in a Romantic Fantasy

I lived my entire life as a martial artist in the Namgung family, only to die at the age of forty-five during the Great War against the demonic cult. But when I opened my eyes, I found myself as a child of a foreign race in a strange world. "You begged to use the training ground again, didn't you?" "Yes. I'm already five years old, and if I don't start learning the sword now, it'll be too late." "What do you plan to do by learning the sword?" "I want to become a Sword Master." "Sword, ahem. So, my son wants to be a Sword Master." "It may seem like a distant goal now, but as my body grows and my reach extends, I believe I can achieve sword energy. Please allow me." "Reach... Can you explain what that is, son?" "It means the distance at which I can strike my opponent increases as my arms and legs grow longer." "I see... So, when you grow a bit more, you'll be able to wield sword energy easily." "Yes." Just as a caterpillar eats mulberry leaves, a martial artist must wield a sword. I decided to master the sword in this new world and become a Grand Sword Master. "Isn't this Professor Casablanca's World History class? I heard it's the same as last year's." "Yes, it is..." "I took detailed notes, here, use them." A handsome face, good lineage, and a gentle personality. This boy, who lacks nothing, keeps following me around. He gives me his notes, lends me study rooms, and even buys me food. Could he be trying to win me over to become the emperor? But he's acting... too cute for that... The story of a martial artist reincarnated in a romantic fantasy world, navigating the chaotic academy life with a suspiciously gentle prince and slowly falling in love for the first time!