Yiyong: the Ring Is Fake, but Ai Ren Is Real.

[High martial arts world] + [Demon Slayer's private parallel world] + [Old righteous ninja] + [Not official version] + [OOC warning] [Upgraded Emotional Dual Lines] + [Old Design Justice Ninja] + [Charcoal Incense] Sub: [Immortal Flower] + [Snake Love] + [Koma Love] This is a world where spiritual power is awakened and monsters are rampant. Everyone can awaken martial arts talents, build a base, and fight against monsters. However, the real terror is not the monsters, but the immortal ones who are only afraid of the sun: ghosts. Tanjiro Kamado takes his ghostly sister Yadouzi on a journey to find a way to transform back into a human. Under the recommendation of the strongest warrior Tomioka Giyu, he entered the Demon Slayer Academy and met the talented warrior Kurika Rakana and a group of partners who fought side by side. With his "unbounded vision" that can see through the essence of all things, he can see clearly the essence of all matter, and he can also read people's hearts through his eyes. Therefore, he also discovered the little secrets of some people in the academy For example, Mr. Tomioka, although he said he was married, he had never seen him bring his wife out, and he was always very close to Miss Butterfly Ninja. Let's talk about Miss Butterfly Ninja. Although she doesn't like to talk, she seems to like staying with Giyu. Their relationship... It seems unusual...