For Naruto, you can focus on his growth from his experiences in his own world and how he adapts to having Bolt around. Bolt, on the other hand, can be developed by showing his reactions to the new and strange things in Naruto's world. In the context of a lemon fanfiction, their development can be linked to their growing physical and emotional closeness. For example, as they become more physically attracted, they also start to understand each other's deeper emotions and fears.
To develop the characters, start with their basic personalities. Naruto is known for his determination and his big heart. Bolt has his own set of skills and a somewhat cocky attitude. In a lemon fanfiction, these traits can be explored further. For instance, Naruto's determination could lead him to be the one who initiates a closer relationship with Bolt. Bolt's cocky attitude might initially be a barrier, but as they get to know each other better, it could soften. This development can be shown through their interactions, both in normal situations and in more intimate moments.
Chapter 128, "Which family created the white lotus persona to go transplant rice seedlings in the field?", is the clearest early answer because it turns Jiang Li's situation into a concrete plot event.
Chapter 411, "You Really Hold a Strong Grudge", is the clearest early answer because it turns Seeing Yu Li's situation into a concrete plot event. Early on, The lead director, who understood the entire process, had an....
Chapter 394, "I'll Invest One Billion in Your Movie", is the clearest early answer because it turns Shining Transformation Trip's situation into a concrete plot event.
Chapter 140, "Did Jiang Li Finally Crash?", is the clearest early answer because it turns Sister Yan's situation into a concrete plot event. A useful checkpoint is the way the scene starts with In the evening, the setting sun was like blood, dyeing the entire...
Chapter 411, "You Really Hold a Strong Grudge", is the clearest early answer because it turns Wilderness Survival's situation into a concrete plot event. It opens with The lead director, who understood the entire process, had an...
Chapter 96, "Can't Easily Forgive the Scumbag!", is the clearest early answer because Easily Forgive gets a payoff that changes the stakes. It opens with Jiang Li's words seemed absurd, yet there also seemed to be a trace...
Chapter 348, "Schemes and Counter-Schemes, the Five of East Ridge, Zhu Yang's Threat, The Dust Settles (Part 6)", is the clearest early answer because it turns Lu Yang's situation into a concrete plot event. The chapter turns that into something concrete by moving from Lu Yang thought of something and laughed, "Besides, I remember that... to Actually, Lu Yang already knew the answer without waiting for Zhu....
Chapter 413, "This Island is Too Strange", is the clearest early answer because it turns Wilderness Survival's situation into a concrete plot event. Early on, Guan Xiong was already a well-known outdoor adventure vlogger on a....
Chapter 147, "Jiang Li, We Are Going to Meet Again", is the clearest early answer because it turns Wen Jiaojiao's situation into a concrete plot event. The chapter turns that into something concrete by moving from Xiao Xueyi nodded in agreement after listening.
Chapter 138, "From now on, let's get to know each other again", is the clearest early answer because it turns Jiang Yan's situation into a concrete plot event. The chapter gives readers a real answer by opening on Is there such a good deal?