Perhaps Natsu goes on a journey to find other dragon slayers who might know more about his dual nature. Along the way, he meets new characters, some friendly and some not so much. This journey could also lead to him learning about a hidden prophecy related to dual dragon slayers and their role in saving the magical world from an impending doom.
One idea could be Natsu exploring a new magic ability related to his dual dragon slayer powers. For example, he discovers a way to combine the fire of his Igneel - taught magic with the other dragon's element in a more powerful and unique way.
A plot could revolve around Natsu facing a villain who also has some connection to dual dragon slaying. This villain could be a former apprentice of the dragons who turned evil, and Natsu has to use his skills and the bond with his friends to defeat him. Natsu might have to learn more about the history of dual dragon slaying to find the villain's weakness.
Look to Chapter 176 for the clearest answer. It begins with Shang Shaojing didn't suspect anything and popped the greens into his..., keeps building through The moment he chewed, he realized something was off, and without caring..., and lands on Everyone intentionally avoided that plate of.
The best chapter pointer here is Chapter 159, "The Other Flying Guest is Actually Him?!". It opens with Seeing the red light of the camera turn on, Su Yinwan looked at the... and closes on Shang Shaobai, who was browsing through files, received a call from his....
A practical answer is Chapter 166, because it turns the idea into a concrete scene. The chapter opens with Only after everyone in the small courtyard had left, did Zhao Lang stride..., adds pressure through Fans can't bear to watch anymore.], and ends on However, after interviewing the villagers.
The best chapter pointer here is Chapter 147, "Jiang Li, We Are Going to Meet Again". It opens with Xiao Xueyi nodded in agreement after listening. and closes on Only Jiang Li glanced back at Director Sun, and then took out her own....
A practical answer is Chapter 187, because it turns the idea into a concrete scene. The chapter opens with During the competition, she passed by him numerous times, unfazed by..., adds pressure through But don't worry Brother Cheng, you got second place in the grade this time!, and ends on Perhaps.
Chapter 182 is the strongest chapter-level answer because it starts from At this moment, Qi Tianyu, who had just arrived in the Capital, couldn't... and follows through on But Director," the assistant said, "are you really going to let them keep....
The best chapter pointer here is Chapter 194, "Come and Exercise with Little Shang". It opens with Director Sun, this isn't another one of your production team's wicked... and closes on Wen Jiaojiao is currently in the next live broadcast room, gloating about....
Look to Chapter 144 for the clearest answer. It begins with Ordinary people would have been at a loss in this situation by now., keeps building through But Jiang Yan was, after all, Jiang Yan., and lands on He then noticed the hand—fair and slender, not at all like an auntie's..
The best chapter pointer here is Chapter 147, "Jiang Li, We Are Going to Meet Again". It opens with Xiao Xueyi nodded in agreement after listening. and closes on Only Jiang Li glanced back at Director Sun, and then took out her own....