It could be a new original character created specifically for the fanfiction. Someone with a unique jutsu or skill related to trap - making.
There's also a possibility that it could be a transformed or evolved form of an existing character. For example, Naruto could discover a new form or ability that involves being a trap master. Maybe he learns some ancient jutsu that allows him to create powerful and invisible traps as a new way to protect his friends and the village.
A practical answer is Chapter 114, because it turns the idea into a concrete scene. The chapter opens with As time passed, the number of viewers in the live broadcast gradually..., adds pressure through I've never seen someone so shamelessly clingy!], and ends on But just now, an uncle came and.
If you want the clearest chapter reference, go to Chapter 83. Early on, When they received the task, the three of them were already sharpening...; later, the chapter leans on He Yun had originally wanted to try making braised fish under Jiang Li's....
Look to Chapter 148 for the clearest answer. It begins with Exiting the cottage, Director Sun picked up the phone., keeps building through Before he could even greet the caller, Su Yinwan's anxious voice rushed..., and lands on Just as Jiang Li put down her chopsticks, she received the call from.
Look to Chapter 116 for the clearest answer. It begins with But before the audience in the live room had time to continue brewing the..., keeps building through Jiang Yan quickly entered the room, and a few minutes later, he dashed out..., and lands on Their old Jiang family never had such twisted.
Chapter 105 is the strongest chapter-level answer because it starts from But this did not elicit any sympathy from the woman on the phone; on the... and follows through on However, the next second, things took a turn..
The best chapter pointer here is Chapter 143, "How about Grandma introducing a girlfriend to you?". It opens with Is there really such delicious fish soup in the world? and closes on The live stream audience couldn't help but praise, "You can only see such....
The best chapter pointer here is Chapter 104, "Hurry up and sign the termination letter, come back to me!". It opens with Zhao Lang let out a light chuckle, "Young Master Jiang, don't be nervous,... and closes on Despite a whole day's labor, his face was sunburned red, his shirt had....
If you want the clearest chapter reference, go to Chapter 154. Early on, Hahaha, I'm dying of laughter, Lili, do you really have to be so blunt?"...; later, the chapter leans on His expression is killing me!!!" "Help, she's making a scene, he's....
If you want the clearest chapter reference, go to Chapter 137. Early on, Jiang Li personally went to Lai Fu's tomb and performed a small ritual.; later, the chapter leans on After it was finished, she took out talisman paper and gently waved it....
If you want the clearest chapter reference, go to Chapter 132. Early on, The new girl in the live-streaming room went crazy.; later, the chapter leans on Who is this handsome guy???" "Ahhh, so handsome, I'm gone, where is the....