The upcoming NieR Replicant v1.22474487139 is a remastered version of the original NieR game. The first NieR Replicant was released in Japan 10 years ago, featuring the protagonist Nier, and the tale surrounding his quests to cure his younger sister, Yonah, from a plague liked disease called the Black Scrawl.
Source: N4G PC NieR Replicant ver.1.22474487139 Early Impression – BunnyGaming