Save Kanae at the Beginning and Be Rewarded with a Knight's Illustrated Book

After traveling to Tiandao General Division, the system threw me into the twilight of Demon Slayer. Mission goal: Save the butterfly that is doomed to perish. So, at the moment when Butterfly Kanae was exhausted and closed her eyes, I pressed the Kabuto belt. Clock Up! The world stood still, and the evil ghost's sharp claws were shattered by my kick in a matter of seconds. [Reverse the fate of Butterfly Ninja, the mission is completed. [Reward Unlocked: Kamen Rider Kuuga—a spiritual stone belt containing ancient power. When Kanae woke up in my arms, and when her sister Butterfly Ninja rushed in with despair and saw her sister safe and sound - I knew that everything in this world had been destroyed by me. But everyone in the Zhuhe meeting soon discovered that this man's power far exceeded the scope of breathing techniques. Mizuho Tomioka Giyu: "Why does his 'breath' allow his body to grow armor containing the power of the seal?" Koizhu Kanroji Mitsuri: "Ah! Mr. Tendo's transformation is a different color today. He's so handsome! Then, can you show me that pink form?!" The Butterfly Ninja's smile became more and more unfathomable, and her sister Kanae's eyes were full of inquiry and gratitude: "Mr. Tiandao, the 'acceleration' you used when you rescued me, and the completely different 'transformations' after that... Can you please explain it to us?" Even their stepson, Lihua Luoxiang Nahu, often casts a quiet and focused gaze. Onimusuji Muzan was furious in the depths of darkness: "Impossible! That golden impact, the ability to time, and even the sword that controls the weather... This is definitely not a vampire technique! What on earth is he?