BUR #23254 has been approved by @nonamethanks.
create alias kallen_stadtfeld -> kouzuki_kallen
In Code Geass, Kallen has two names. She is first introduced as Kallen Stadtfeld, but she only uses that name to hide the fact she's half Japanese, a fact we learn only three episodes in. She's shown to spurn the name Stadtfeld in preference of her mother's maiden name, Kouzuki (which is likely why the Code Geass wiki uses Kōzuki over Stadtfeld).
A very similar BUR for Lelouch was approved in topic #23555; hopefully the same can be done here.
Updated