Maybe Tony scolds Peter for disobeying a safety protocol during a mission. Peter, who looks up to Tony, is deeply hurt by the scolding and starts to cry.
Perhaps Tony is under the influence of some mind - controlling device. He says mean things to Peter that he would never say normally. Peter, being young and sensitive, is unable to bear it and cries. He might say things like Peter is not worthy of being an Avenger, which deeply wounds Peter.
In the fanfiction, it could be that Tony accidentally reveals some harsh truth about Peter's powers that he wasn't ready to hear. This shock and disappointment make Peter break down in tears. For example, Tony might tell Peter that his powers have a limit that can't be overcome easily, shattering Peter's hopes of being a super - strong hero.
One possible reason could be that Tony Stark is being overly critical of Peter's superhero work. Maybe Peter made a big mistake during a mission, and Tony's harsh words in his attempt to correct Peter made him cry. For example, if Peter accidentally put civilians in danger and Tony scolded him severely.
The plot could start with Tony noticing Peter's potential but also his limitations with his current gear. So, he decides to make Peter an Iron Suit. Peter is initially in awe of the new suit and has to learn how to use all its functions. There could be a scene where he accidentally activates a wrong feature and gets into a bit of trouble.
One possible plot is that Tony begins to set up a trust or some sort of legal arrangement to ensure Peter inherits his assets and responsibilities. Along the way, Peter might struggle with the weight of this new role. He's still a young kid, after all, trying to balance school, his normal life, and now this huge expectation of being Tony's heir. There could be conflicts with other characters who either envy Peter or think he's not ready for such a big role.
Well, it shows that their relationship isn't always smooth. Tony, as a mentor, has a lot of power over Peter, and when he makes Peter cry, it shows that he can also be a source of pain for Peter. It's like a complex father - son relationship where the father figure can sometimes be too strict or make decisions that the son doesn't like.
One possible plot could be that Tony takes on a fatherly or mentor - like role. He might call Peter 'baby' in a protective way, like when Peter gets into a dangerous situation during a mission. Tony scolds him gently while using the term 'baby' to show his concern for Peter's well - being.
Well, perhaps in the fanfiction, Tony kidnaps Peter because he believes Peter has some sort of secret that could endanger the world if it gets out. He might be trying to protect the world in his own, extreme way. And Peter is left confused and scared, having to figure out how to convince Tony he's on the right side.
Well, perhaps Tony has some sort of misunderstanding. Maybe he thinks Peter has betrayed him in some way, so he kidnaps Peter. But later, as he realizes his mistake, he tries to make it up to Peter.
Well, one possibility is that Tony could replace Peter in a mission. Maybe Peter gets injured and Tony steps in to finish what Peter started. It could also be about Tony taking over Peter's role in a social or school setting within the fanfiction world.
The plot could involve Peter being homeschooled by the best tutors Tony can hire. As he grows older, he starts to show an interest in helping Tony with his superhero work. Pepper is initially hesitant but then realizes Peter has a good heart and strong sense of justice. There could also be a sub - plot where Peter tries to keep his identity a secret from the outside world while still being part of the Stark family's public life.
One possible reason could be that Peter is keeping secrets from MJ about his Spider - Man identity. In many versions, his secrecy creates misunderstandings and MJ might feel left out or betrayed, leading to her crying.