[One Heroine: Shinobu Kocho] [No Transmigration] [No System]
Though he was the former Thunder Hashira's student in the Demon Slayer Corps, it still took him a full two and a half years just to barely master his mentor's specialty, Thunder Breathing.
Thinking about it makes Matsubara Natsuki feel a little ashamed. Fortunately, he has the ability to grow stronger by killing demons.
Kill the Hand Demon and get a red orb that boosts physical strength.
Kill a Lower Rank demon and get a blue orb that improves his Breathing Style.
Kill an Upper Rank demon and get a silver orb that strengthens his Nichirin Blade.
He kills his way onward, again and again, until at last Matsubara Natsuki looks at the dying Muzan before him and smiles calmly.
“Muzan, what does life mean to you?!”
After killing Muzan, Natsuki looks back and realizes he has become invincible in the world!
Key points: No transmigration, one heroine, one heroine, one heroine: Shinobu Kocho!
(Important enough to say three times.)
