Memechi Diamond

Memechi Diamond (メメチダイアモンド) is a doujinshi circle which appears to consist solely of Kirioka Sana - under the pseudonym Kanasanaka (カナサナカ) or simply Sana (サナ).

Kirioka has released a number of doujinshi works under the Memechi Diamond name, including Enthralled.