Hatake Kusuo becomes the nephew of Konoha’s White Fang. After waiting five long years, he finally activates the Strongest Roleplaying System and receives the template of Yoriichi Tsugikuni from Demon Slayer. At the age of five, he awakens Sun Breathing. Using Total Concentration Breathing and extraordinary swordsmanship, he overwhelms Uchiha Sasuke at the Ninja Academy and accidentally causes him to awaken the Sharingan early. Just when everyone thinks he is merely a taijutsu genius, he cuts out a fire dragon with a wooden sword, rivaling a B-rank ninjutsu. While his shadow clone attends classes at school, his real body trains relentlessly to master the Demon Slayer Mark and Transparent World. This is the legend of Hatake Kusuo. With the sword in his hand, he will forge a different path through the ninja world, a path like Yoriichi’s.
This novel is alright. Although the plot deviates slightly from the original work, it's still manageable. I'd give it four stars. I recommend the author read other people's novels; you can easily learn some experience and knowledge from them.