I'm looking for a manga

Hey guys I'm looking for a manga that's an isekai I think the first chapter has the MC is told by the villanness of the series that he's ugly or something like that. Then it turns out in the original route of the story they got married as a punishment. However in this route he loses weight and takes charge of his land and makes it successful with hot springs and other things. Then comes along the beging of the story and he meets the heroine of the story on the way to school and they become friends. There's also a male character that's really tall (I think he's like the main general of the army's son or something)when they meet. Also everyone seems to meet in his room. I think he's also a black smith. Thanks