In most cases, you can't use Marvel characters in fanfic without proper authorization. Marvel is very protective of its intellectual property and has strict guidelines.
It depends. Some Marvel characters might be protected by copyright, so using them without permission could get you in legal trouble.
You generally shouldn't use Marvel characters in fanfic. Marvel has the rights to those characters and using them without permission violates the law. However, there are some fanfic communities that operate within certain limits and guidelines set by Marvel, but it's still a risky proposition.
If you want the clearest chapter reference, go to Chapter 118. Early on, At 8 in the morning, several guests appeared on time next to the...; later, the chapter leans on Seeing the five individuals walking together in unison, Director Sun was....
A practical answer is Chapter 147, because it turns the idea into a concrete scene. The chapter opens with Xiao Xueyi nodded in agreement after listening., adds pressure through She even took the initiative to call?, and ends on Only Jiang Li glanced back at Director Sun, and then took out her.
If you want the clearest chapter reference, go to Chapter 139. Early on, Wen Jiaojiao's live stream was inundated with a wave of question marks.; later, the chapter leans on Princess Wen, what are you doing?.
If you want the clearest chapter reference, go to Chapter 173. Early on, Jiang Li finally rose from her seat.; later, the chapter leans on Seeing her stand up, He Yun also stood up..
Chapter 152 is the strongest chapter-level answer because it starts from While most of the villagers of Chixia Village were gathered at the village... and follows through on That shouldn't be." Zhao Lang's eye color darkened, "I'm afraid he's....
A practical answer is Chapter 130, because it turns the idea into a concrete scene. The chapter opens with This task, the first one, should have been his in the bag., adds pressure through Not to mention Wen Jiaojiao, who was still lying in the hospital on an IV..., and ends on Normally, the best.
If you want the clearest chapter reference, go to Chapter 138. Early on, Is there such a good deal?; later, the chapter leans on Qi Tianyu quickly nodded in agreement and knelt down to start helping....
The best chapter pointer here is Chapter 100, "Ominous, there might be a bloody disaster!". It opens with The barrage was about to die of laughter. and closes on Her eyes flickered slightly as she grabbed the hand..
If you want the clearest chapter reference, go to Chapter 122. Early on, Damn, are we supposed to find the points card in the mud?!" He had just...; later, the chapter leans on To salvage his image, he had deliberately dressed up before leaving the....
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....