No, it isn't. This is her outfit in Touhou Gouyokuibun, an official game that came out this day as a beta version. (it's indicated by the tag in the source too)
Edit: Man just slower than Errante a few second lol.
No, it isn't. This is her outfit in Touhou 17.5 Touhou Gouyokuibun, an official game that came out this day. (it's indicated by the tag in the source too)
yeah, i've just checked, i jumped the gun on this one, Edited the correction.