The two most representative costumes of Kuroneko/Ruri Gokou in the Ore no Imouto ga Konna ni Kawaii Wake ga Nai series are gothic lolita clothing and a jersey. She wears the jersey mainly at her home. Cospa's moe/bishoujyo specialized brand Nijigen Cospa has started accepting pre-orders for the Kuroneko jersey set for both men and women. It has embroidery Kuroneko marks on the chest and the thigh, the same places in the anime (check the images below). The price for the set is 22,050 yen (US$211.87) and 12,000 yen (US$115.30) for the jacket only. The scheduled delivery day is in late March of 2014.
Source: Nijigen Cospa
© Tsukasa Fushimi/Ascii Media Works/OIP2