The sign says "ME Restaurant". According to supermarket workers, it's been open for 3 months. I literally see no info about this anywhere on the interwebz.
If you've eaten there, comment on the setup please? It looks like 2 restaurants, but I can't really tell. It's directly above PP Pop, and on the terrace/loft of HK market. The access to upstairs is in the front of the market facing Garfield, to the right of PP Pop.
Address: 127 N Garfield, Monterey Park