Just like post #7253437, seems like some ASMR doujins are capitalizing on characters that look like Bocchi but aren't. While comic doujins are another story, I doubt any group could get permission to produce erotic audio works featuring copyrighted characters. Info on the dlsite page says this character is named 暗田澪 (unsure of the exact reading, but I guess Kurata Mio). The title of the work does feature the term ボッチ (Bocchi), but that's not a name, it's just a term for a "loner."