Being the Coach of the Demon Slayer Corps, Muzan Panicked

Ling Feng traveled to the world of Demon Slayer and became the 'hidden' coach of the Demon Slayer Team. Awakening the god-level guidance system, guiding others to become stronger will also make you stronger. At the beginning, you encounter Butterfly Ninja, and teach Butterfly Ninja how to improve insect breathing. Butterfly Shinobi's combat power skyrocketed and he became the strongest Hashira, killing demons like chopping vegetables. Tomioka Giyu: "Ling Feng is very powerful. Just a few pointers can make people's strength improve by leaps and bounds." Purgatory Xingjulang: "Haha, Ling Feng has ignited my fighting spirit. I have to become stronger." Yi Wo Zuo: "Only Ling Feng in the Demon Slayer Squad is worthy of fighting me." Demon Dance Tsuji Muzan: "I heard that the Demon Slayer Squad has a genius named Ling Feng. We must catch him at all costs." Subsequently, under Ling Feng's guidance, the Demon Slayer Team became stronger and stronger. From then on, the entire world of demon slayers changed, and Wuhan was also in disarray... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.