@paranoidgarliclover I just did some digging and it seems to be less of a rumor and more of a work in progress.
The Raku Corporation（楽コーポレーション–no relation to Aburiya Raku）is planning on opening one of their Shirube（汁べゑ）concepts in the old Musha space on Wilshire.
This is very exciting news. Some FTCers may have even been to one of their restaurants in Tokyo (Store List [in Japanese]).
I used to go to their Shimikitazawa location semi-frequently.
They serve better-than-average izakaya fare and lots of booze in a fun atmosphere. (Menu)
One of their signature dishes is shime saba (vinegared mackerel) dish that is served and torched tableside (photo below).
Raku Corporation Homepage: https://raku-co.com/
Shirube - Shimokitazawa Page: https://raku-co.com/?page_id=26
Website Release re: Santa Monica location: https://raku-co.com/?page_id=474
Shirube - Santa Monica
With a target opening date of Fall 2018, preparations for Shirube - Santa Monica are underway.
We will announce updates here as they become available.
Torched Shime Saba:
Photos of the Shimokitazawa location (Google Image search):