Difficulty identifying what goes in Botan Ebi head sauce

I'm trying to ID the organs in the Botan Ebi head so I know exactly what I'm putting into a head sauce. First picture is of two organs that are attached to the meat that's usually attached to the carapace. Pulling this part out leaves a black elliptical sac right behind the eyes (second picture). The two organs in the first picture can be separated from the meat resulting in a large grey/grey-orange/brown tinged sac, and pair of much smaller bright orange sacs. Can anyone help me identify these? I've looked at many diagrams and schematics but in the end I'm not confident in identifying them myself. Which of the 3 sacs (orange, black, grey) are good to eat?

by pzpzpzp1