One example could be characters like Light and Ryuk from Death Note fan fictions. Light has his own internal struggle between his sense of justice and his growing megalomania, which can be seen as a form of split personality in some fan interpretations. Another is Rin Okumura from Blue Exorcist fan fictions, where his demon - half and human - half can create an internal conflict similar to a split personality.
In fan fictions based on Naruto, Sasuke can be considered to have a kind of split - personality - like situation. His desire for revenge and his underlying bond with his friends create two opposing forces within him. Also, in Evangelion fan fictions, Shinji has his own internal battles that can be seen as split - personality - esque. These examples focus on real character - driven conflicts rather than inappropriate or strange physical changes.
If you want the clearest chapter reference, go to Chapter 16. Early on, Just as the words fell, Jiang Shixu swiftly cast his eyes downward.; later, the chapter leans on His eyelashes were very long; when they fell, they could cast a small....
Chapter 91 is the strongest chapter-level answer because it starts from When Jiang Li saw that he had been assigned a harrow, Qi Tianyu felt his... and follows through on Hahaha, Young Master, what the heck are you thinking about eating!" "I'm....
A practical answer is Chapter 73, because it turns the idea into a concrete scene. The chapter opens with Director Sun, tongue-tied, finally managed to squeeze out a sentence,..., adds pressure through Her favorite food is rouge goose, her favorite amusement is Dancing Gun,..., and ends on Despite.
Chapter 23 is the strongest chapter-level answer because it starts from Although Jiang Li exerted very little strength, Jiang Yan instantly felt... and follows through on However, just as she buried herself in the study, pouring over mysticism....
The best chapter pointer here is Chapter 32, ""Shining Transformation Trip" Official Lineup Announcement!". It opens with You should know, an ID photo is like a mirror for demons. and closes on With airflow comes water flow, and your fortune will naturally improve."....
If you want the clearest chapter reference, go to Chapter 40. Early on, [Jiang Li claims she copied this herself?; later, the chapter leans on But her calligraphy is actually this pretty?] [Jiang Li dares to boast,....
If you want the clearest chapter reference, go to Chapter 65. Early on, Several minutes later, the room remained silent.; later, the chapter leans on The cameraman then discovered that Jiang Li's door wasn't properly shut,....
Chapter 24 is the strongest chapter-level answer because it starts from Not only that, even the non-mainstream photos she had previously posted on... and follows through on Shi Xu rarely feels like going out, so that's nice." Aware that he....
Chapter 57 is the strongest chapter-level answer because it starts from Lu Xingchao's numerous fans were stunned. and follows through on I'm saying, big bro, can you at least reply to me?.