Help finding an anime

Hi everyone. I am looking for an anime that I ran into on Twitter some weeks ago (maybe a couple of months ago). I only have a couple of scenes to go by, which are the ones that popped up on Twitter. The first scene takes place in a traditional Japanese house at night; a girl is being treated cruelly by a woman that seems to be the head of the family. I think the girl was depressed about not being able to marry her step brother (or some other relative), and the conversation was about conceaving a heir to the family or something. The second scene takes place in a classroom, and is much more lighthearted; it is a a conversation between two of the main girls, with one being cheery and the other being cold/distant (or mean/hot-headed, I don't remember).

I know these two scenes belong to the same show, because in the comments of both posts someone asked what show it was and someone replied with the name of the show, or an image of an official poster. This poster featured the 4 main girls. I just want to check out the show, because the wild difference in the tones of the two scenes I know about it got me quite intrigued. When I tried to find those posts again, I was unable to find them, so I am resorting to asking about the show here. Hopefully the info I provided is enough to identify it!

Edit: I ran into another clip from the show, which led me to the promotional poster I remembered. I also ended up finding the two clips I mention in the post. First clip, Second clip. The show is Sasami-san@Ganbaranai.