Ughh no you know Thatch would be soft on you too. Blackbeard probably wouldn't rough you up too bad since you're a gift, but he's still terrifying and however he treats you probably has you bracing yourself for something much worse than what you actually get, so... yay? Spending most of your first night in the infirmary with Marco, who soothes your bruises and rope burns while Thatch is busy talking things over. He's hoping the deal goes through. It's obvious you're doing your best not to cry. It's cute. He gives your shoulder a reassuring squeeze when Thatch comes in to fetch you, chuckling when you shrink away from him. While yes, you'll end up as the lover of all 4 of them, but you're Thatch's first. You're guided back to his room with a hand at your lower back.
Man.
I love this so much. The idea that your first time with Thatch takes so long because he's so careful, so gentle. It's inevitable, you're going to let him take you, and he'd going to make it feel good.
cw: yandere, noncon, summarizing events mostly but it is still dark content