We decided to post a follow-up on my recent post as one of our regular commentators, Ng Peony, brought up a good topic this morning. She said that it's possible that the letters are "Mo" as opposed to "Mm" on the red cap HJ wore shown in the picture below . However, she added that even if it's Mo or Om, it could mean "Only M". I think "M Only" works just as well.
However, it's not the first time HJ wore a red cap that has an initial "M" on it.
Was he influenced by this red cap or the owner??? kekeke