Be Invincible from Demon Slayer!

"You have only been learning swordsmanship for a month, but I didn't expect that you could reach such a level." Nintaki Sakonji was in a daze: "It seems that I have accepted a genius disciple." "Perhaps this troubled world can end in your hands." "Old man, there is no need for you to emphasize the fact that I am a genius every now and then." Li Wei returned to the barbecue grill and turned over the meat on the grill: "Also, old man, when will you teach me how to breathe water?" Ningtaki Sa's recent resentment +666! Bite! Under the tutelage of Rinataaki Sakonji! Learn to breathe water! Primary! 0/10000 Ding! Congratulations to the host for obtaining the breathing method: Kagura, the God of Fire! Intermediate 0/300000 This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.