Aki is close to being an oshi (Watching her rn) ever since i saw her Shallys performance last year. I also remember one of the first hololive clips I saw was a clip of her saying she is thankful for her loyal fans despite her low sub count and that endeared her to me. My top ones are Kaela (Favorite Oshii because she also speaks english), Watame (Was my first oshii but her not speaking English makes things hard), Fauna, Haachama, Aki, Lui, Mumei. Not particularty a fan of Risu but I consider her the best singer in Hololive.