– This is not an official term. In the context of this keyword, it most likely stands for cracked and hot (i.e., a popular, modified version). Because Imouto! Life ~Monochrome~ is a paid commercial game, many third‑party archives offer pre‑cracked or patched executables that bypass the DRM. The “c hot” tag indicates that the offered download is a ready‑to‑play, cracked version of v2.01.
Be cautious when searching for specific version numbers (like "v201 c hot") on open web forums or file-hosting sites. These downloads are frequently repackaged with adware or malicious software. Sticking to official storefronts ensures the files are clean.
While newer versions have color palettes and voice acting, the raw, slightly buggy charm of v201c is unmatched. It feels like flipping through a worn sketchbook.