Okay so like the ending is, nan still gave the ML a chance to court him but they're not immediately lovers. ML is trying to win Nan's love back, so basically the end is just literally them trying to figure things out (not immediately together, just courtship). The brother was released, ML did everything he promised to nan back then (like giving him a house, or any other stuff nan requested before the agreement about sleeping 10x)
For me the ending is just really simple and so-so kinda fast paced though... Since it ended at around 70+

I already finished the novel of this. Honestly, the ending is so-so i guess? I mean, it’s realistic and straight to the point, and I like that Nan didn’t really fall for ML immediately, so yes ML is trying to earn Nan’s love back