The tag alias #52421 missbutler -> acidneko has been approved.

Reason: acidneko is the current operating name of "missbutler", switched shortly after his transition.
https://twitter.com/xxacidnekoxx/status/1161330417472950272?lang=en

EDIT: The tag alias missbutler -> acidneko (forum #314087) has been approved by @Rainbow_Dash.