AIO- Bf argued with me about changing the show cause it made me uncomfortable

So, my boyfriend has been watching "The World's Finest Assassin Gets Reincarnated". I didn't know much about it, but there's an episode that really disturbed me, it shows orphan girls getting kidnapped and forced into slavery. There's a specific scenes where they're stripped, washed, and dressed up to be sent out with grown men. It's not super graphic, but you know exactly what's happening, and it made me deeply uncomfortable. l asked him to skip the episode or change to something else because I didn't want to watch it. Instead of just respecting that, he kept asking why I was uncomfortable. He said it’s the backstory for one of the female characters or whatever but I think we get the gist of what happened at this point before the main character saved her. He even asked if something had happened to me in the past to make me sensitive to that kind of content. I told him it wasn't about that. I just don't want to watch scenes where girls are being exploited like that. I think that's a reasonable boundary.

But he kept insisting, saying "we're not actually seeing anything bad happen." That's true, we don't explicitly see anything, but that doesn't change the fact that it's clear these girls are being groomed and sold. It's disturbing, and I don't think I should have to justify why I don't want to watch something like that. He finally agreed to skip the episode the next one was better. So from what I saw the main character adopts her as his sister. But towards the end of the next episode the main character has a wet dream while sleeping and she offers to be his lover and sister. Which made me not want to even watch it anymore. After everything they made us watch her go through she just jumps at that? I asked him to just turn it off but he made it seem like I was making a big deal.

I feel like a partner should respect boundaries like this without making me feel bad for having them.