Tuskihi's friend back in elementary school, Sengoku Nadeko is a shy girl who can be easily amused. She used to play with Koyomi a lot whenever she was invited by his sisters to come over. Koyomi is also the person who ended up helping Nadeko in breaking her fatal curse.
Impressive cosplay by Kousaka Yun! I really love the simplicity and effectiveness of this cosplay. The location has a nice, summer feel to it too! Thanks to Dhalia for sending this!