Kaioshins are alien cryptids, but I don't want to look like I'm sharing how horny I am of these aliens by adding non-human details to them. I just want to make funny and silly headcanons on dragonball characters.
Besides the non-human appearance, of the sharp tooth jaw variety, and pointy elongated ears, since the kaioshins are fruit creatures, I'm thinking of loreketh parrots and their unusual tongues. Perhaps it wouldn't make any sense to the kaioshins, but it would probably be interesting to watch the god of creation stick out his unusual tongue with a tassel if he eats a fruit, he can lick the fruit juice from it. Or if Shin is treated to human food, he doesn't think twice about the fact that his tongue looks weird, his studying the food through the spreading brushes on the end of his tongue looks weird. (he brings the spoonful of food to his mouth, sticking out his tongue. I think that later, when he gets used to human food and its taste, he will not stick his tongue out).
(Think of Gohan as curious a scientific researcher who sees the kaioshin's real appearance, and he's at the ready with pen and paper)
No worries, all flavours are welcomed by the Kaioshins hehe. But this is an incredible, well-constructed headcanon especially the lore you made for the Kaioshins is creative, OP. Gohan got his pen and paper and a journal filled with notes and Shin found the behavior a bit odd but endearing how much Gohan is curious on how the Kaioshins work but so far only I would say 15% is covered, the rest is still a mystery.
I believe since Shin is the younger Kaioshins compared to Northern, Southern and Western Supreme Kai, he observes their behaviour and that is normal for him to nurture some of the actions.
I look into Lorikeet parrot tongue and how the parrot don't end any seeds, likely Shin uses his teeth to bite them off instead of tasting it. This is a cool feature, OP you came up. Due to his unique tongue, his preference for sweet things or more juicy foods due to it being complimentary the way he normally eats. I can imagine him finishing a watermelon in that way and leaving the rind in his hands before he uses his sharp teeth to finish it off.
I like to add a few things I thought of what else the Shin's features he got, which can be different with the different Kaioshins as well (no Kaioshins are exactly the same). For example I headcanon Shin able to see slow motion very easily due to his short stature and his fast metabolism and experience time slowly if he wishes to. Kaioshins could eat the poisonous plants without any harm in moderation, some can serve as healing or extra boost of energy.
Remastered/digital version of a sketch I did in traditional (posted on an ig story). I'm probably getting too attached to the future timeline just for this au sigh
took me some weeks but I finally named him ^_^ his name is aseul. like azul. the only lore I have for him is that despite his laid back and absent-minded nature he was fairly worried about the future. kinda like how beerus had the oracle fish aseul had a seer he would occasionally visit in the mortal realm even before he took on arin as his apprentice. well the seer had predicted the erasure of his universe and.... yeah :P he's ded