>>724204409
>Are we talking fish shaped toaster strudels or is there something more to these things?
They aren't as flaky as that. If you've ever had those frozen french toast sticks, the outside is pretty similar to those, IIRC (without much resemblance to actual french toast, to be clear).
Custard and chocolate both sound good, but I don't think you can go wrong. Red bean paste sounds a little exotic, though.
In July, I went to a place in Los Angeles called SomiSomi that serves ah-boong (Korean taiyaki, essentially) with soft serve ice cream. It was pretty good. There was a Sega pop-up across the street that I did not go to, but I looked inside.