Better late than never.
Kanda Myojin was where its at, as they have the ceremonial evil-warding arrow that I needed.
While I do visit Kanda Myojin from time to time whenever I’m in the neighborhood, it was only now I found out that they have a shinme (sacred horse; 神馬).
It was so crowded at Kanda Myojin as well:
After some lunch, I decided to walk to Ueno Toshogu to buy more omamori and get some shrine stamps.
And lastly, I got two shrine stamps (御朱印).
May 2023 be a good year for all of us!