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Rawrski is swag created a topic of Usagi no Mori

So like, we all now how Tamaki has trauma from his mom and all. But like from what?
I know this sounds like I'm dumb and I probably am, but I'm not sure if it is just her being an awful mom and not really being there for her son, or if it's sexual assault that he has trauma from, or is it like something else? What did they mean with all of that? I'm just not sure please tell me.