Ore no Imoto ga Konna ni Kawaii Wake ga Nai: Kosaka Kirino

A 14-year-old girl with an older brother complex, Kirino is quite mature for her age and has a modeling job to pay for her otaku hobbies. She loves her older brother, Kyosuke and often feels frustrated when he is with, or shows interests, in other girls. She thus forces Kyosuke to spend time with her, but generally denies the fact that she enjoys his company.
Such a cute cosplay by Kanda Midori! She looks so dreamy in this photo.