At first, Naruto might be confused. He trusts Konoha, and when this sudden experimentation starts, he can't believe what's happening. He would try to talk to the people in charge, like the Hokage or his teachers, to find out why they are doing this. But if they don't give him satisfactory answers, his confusion would turn into determination to break free. He would use his wits and his ninja skills to try and get away from the experimenters. And as time goes on, he could become more bitter towards Konoha, which would be a big change from his usual positive attitude towards his village.
He would probably be very angry. Naruto has always been a free - spirited person, and being experimented on against his will would be a huge violation of his rights. He might initially try to resist physically, but as the situation gets more complex, he could start to plot his escape and revenge.
Naruto could also be sad. He has always considered Konoha as his home and the people there as his family. When they start experimenting on him, it's like his family has betrayed him. He might feel isolated and alone, especially if no one comes to his aid. In his sadness, he could either give in to the experiments for a while, thinking that he has no other choice, or he could find an inner strength to fight back, fueled by his emotions. This would all depend on the nature of the experiments and the people involved in the fanfiction.
The best chapter pointer here is Chapter 29, "The 36 Strategies - Sneak through Chen Cang". It opens with Big brother, it's me..." The shadow suddenly spoke and it was Jiang... and closes on Big brother, are you unwilling?" His mournful expression seemed to signal....
A practical answer is Chapter 28, because it turns the idea into a concrete scene. The chapter opens with The next evening, Jiang Yan drove home seething with rage., adds pressure through Fuck, who's there, standing in the middle of the night scaring the shit..., and ends on Lili then kicked his.
The best chapter pointer here is Chapter 31, "Master, I've been having some bad luck lately!". It opens with Before Shen Lan had reached the backyard, she already heard the sounds of... and closes on After staying in the study and reading for another day, she finally....
If you want the clearest chapter reference, go to Chapter 20. Early on, Several people turned their heads upon hearing the sound and saw three...; later, the chapter leans on She was clad in a long black dress, and the dull color did not hide her....
Chapter 60 is the strongest chapter-level answer because it starts from What's with Jiang Yan, treating his own sister Jiang Li like this?" "He... and follows through on And in traditional characters?" "What else?.
Look to Chapter 28 for the clearest answer. It begins with The next evening, Jiang Yan drove home seething with rage., keeps building through Before he even entered the dining room, he shouted angrily, "Lili, you did..., and lands on Lili then kicked his knee hard..
Look to Chapter 21 for the clearest answer. It begins with Jiang Li's clear and logical explanation had everyone stunned in place., keeps building through Jiang Yan had wanted to defend Su Yinwan since his sister's temper in the..., and lands on But the implications could be different..
If you want the clearest chapter reference, go to Chapter 20. Early on, Several people turned their heads upon hearing the sound and saw three...; later, the chapter leans on She was clad in a long black dress, and the dull color did not hide her....
Chapter 3 is the strongest chapter-level answer because it starts from Qiao was still annoyed at the attitude of this unknown girl when she heard... and follows through on Jiang Yan, forced into a marriage with someone he did not love, had....
A practical answer is Chapter 59, because it turns the idea into a concrete scene. The chapter opens with After walking for about two or three hundred meters, the old man stopped..., adds pressure through Your brother might just be kind enough to take you in., and ends on My phone, my cigarettes.