One possible theme could be regression. It might explore the idea of going back to a more innocent or dependent state, like infancy when diapers are used.
Another theme could be about acceptance. If it's about someone who has to go back to diapers due to a medical condition, it could be about coming to terms with a new reality. For example, a person who has lost bladder control might struggle at first but then learn to accept it and the use of diapers as a part of their new normal.
Chapter 773, "I am the Trainee Here", is the clearest early answer because it turns Shen Lan's situation into a concrete plot event.
Chapter 742, "Brother Policeman, Look at Them!", is the clearest early answer because it turns Fang Kai's situation into a concrete plot event. A useful checkpoint is the way the scene starts with Fang Kai became panicked as things were not developing in his favor.
Chapter 711, "It's Actually Her", is the clearest early answer because it turns Zhang Jing's situation into a concrete plot event.
Chapter 871, "Emergency Incident", is the clearest early answer because it turns Xue Wandeng's situation into a concrete plot event.
The best chapter pointer here is Chapter 33, "Variety Show of Villains". It opens with Following the announcement, five artists respectively reposted the Weibo—... and closes on Although Su Yinwan was considered half a goddess to him, the whole thing....
Chapter 913, "Call Me Daddy", is the clearest early answer because it turns Meng Wanzhi's situation into a concrete plot event. The chapter turns that into something concrete by moving from Meng Wanzhi woke up early, preparing to get the two little rascals up...
Look to Chapter 12 for the clearest answer. It begins with Qin?" Jiang Li called out twice, and only then did Mrs., keeps building through Qin, who was standing by the dining table, respond., and lands on The glass shattered on the floor with a crash, attracting the attention of....
A practical answer is Chapter 4, because it turns the idea into a concrete scene. The chapter opens with Qiao regretted her words as soon as they left her mouth., adds pressure through It's difficult for us when you ask for a guest's room number and key right..., and ends on A little girl acting.
Chapter 677, "Worshiping Sister While Avoiding Them", is the clearest early answer because it turns Jiang Zhao Yuan's situation into a concrete plot event. It opens with You should learn from your sister; she's made her own fortune and is...
Look to Chapter 12 for the clearest answer. It begins with Qin?" Jiang Li called out twice, and only then did Mrs., keeps building through Qin, who was standing by the dining table, respond., and lands on The glass shattered on the floor with a crash, attracting the attention of....