i don't know who this is. I don't know where they're from. I just know I like it, and have now added it to my collection.

Tachibana Yukino from the unfortunately short-lived manga Yuki to Sumi. A comedy/slice of life story about the school's top beauty who also happens to be a famous calligraphy prodigy, coercing her classmate to join her calligraphy club after certain circumstances. Around others she puts up a "cool" persona, but in reality, she's just a huge dumbass with a personality very similar to that of Aqua from Konosuba. It's quite a fun read, and the art style is great too.