: Go to MyAnimeList and search for "Ane Wa Yanmama" . If it's a character from a known series, they might have an entry.
Searches for this title across various categories yield the following highlights: searching for ane wa yanmama inall categories top
Given the patterns of adult game naming conventions, "Yanmama" could be a slang contraction or a unique name. Some online archives suggest it refers to a storyline involving a "sister" and a "mother-like" figure (Yan = yankee/delinquent? Mama = mother?), but conclusive evidence points to it being a specific release from a small developer. : Go to MyAnimeList and search for "Ane Wa Yanmama"