SF-A2 was released on the same day as Kaai Yuki and Hiyama Kiyoteru as the 3rd Ah Software Vocaloid.

SF-A2 miki's direction is very different from Kaai Yuki and Hiyama Kiyoteru as she was a professional vocal artist.

[1] On November 20, it was confirmed in the livestream for Vocaloid 4 that they all, with the exception of Tohoku Zunko, will be receiving VOCALOID4 voicebanks.

[2] In another interview, Tomohide Ogata expressed a desire to produce English versions of their Vocals, however, the project is too complex.

Having an immature-looking body allowed her to appear younger than she looks, similar to how Hatsune Miku and Kagamine Rin could do the same.