Tonari no Kyuuketsuki-san is an excellent CGDCT anime that's best watched weekly.
It's adapted from a 4koma manga by the same name, and features 4 main characters with 3 supporting characters. The plot follows a schoolgirl named Akari who loves collecting dolls. She visits the woods near her town when she hears rumors of a house with a living doll in the woods, and encounters our deuteragonist: Sophie, who is a Vampire. Entranced by her doll-like appearance, Akari quickly befriends Sophie, and eventually ends up living with her.
Each episode contains 3 stories, which are mostly episodic in nature barring character introductions.
Okay, not much but definitely present
The ED is a banger, and the OP is pretty good too.
The OST wasn't anything special, but it stood out of the way and fit the relaxed atmosphere of the show.