Someone tell me what Tamaki has trauma from exactly pls

I think it’s a combination of both. the author didnt explicitly said/drew what happened but from what I gather on the past chapters is his mom is ‘touching him’ at night. Thats why he only goes back when his mom is asleep and he’s very wary of her when she’s at home. PLUS the trauma in his early childhood with her having s3x while he’s there, and not really providing for him.

Okay before anything, I would like to emphasize that trauma stems from anxiety and fear. It does not necessarily mean that there's no physical abuse or mental abuse, there's no trauma. So in essence, even by being just a bystander at an event and experience massive bouts of stressful event, most especially to a really young mind, which is still developing, trauma might come in place.

So in the scenario with Tamaki, we can see that his mom didnt really physically or mentally abused him. She might have neglected him to a certain point of Tamaki not knowing that brushing your teeth and taking a bath before bed is basic hygiene. Also, with the men his mother brought home that might have touched him.
He also saw first hand, at a young mind at that, how his mom and her partners have sex. He was also exposed to a very toxic environment as a kid, leading him to develop anxiety and fear. Add that up for the duration he might have experienced it, and there you have it, he had trauma. :)

Also a disclaimer to anyone who reads this especially during this pandemic, feeling overwhelmed with stress can lead you to have anxiety and may develop fear. Please take care of yourselves and remember that not only physical and mental violence can develop psychological problems. So acknowledge what you feel and if you sense that you need help, reach out to people. You are not alone. :)

She was having sex with her child literally being able to see her, that alone causes trauma and would ofc change a childs view on sex early on. Also in the end he said he also said he didnt like it to his mom, i feel like that was an indication she touched him at some point when he was a child and he just hasn’t processed it because he keeps saying he loves her and wont judge her, hope this gelps.

Also besides from his mother having sex in front of him, having fear, anxiety, etc, his mother would tell him not do stuff. Would constantly tell him as a child to not be what she hated about her ex’s, which probably mentally damaged him. I child doesn’t and shouldn’t know about this. All the things he wrote on his journal are just a few examples. “Don’t be this”, “don’t be that”, “do this” but “don’t do it” at the same time. And as someone who experienced something similar, it doesn’t seem like something that can negatively affect you but it really fucks you up. Because of things like that I also don’t know what love is, out of fear, anxiety, etc. I don’t think I’ll ever become to love someone. I’ve many times considered being asexual, but things are just too confusing. In a way his mother is also manipulative (?), or in a way brain washing him but in a confusing way for him. It’s really complicated idk if this makes sense sorry ╥﹏╥