Damn I did not see that coming (especially in a manga about deep sea fish), but after rereading it, the explanation of the hermaphrodites ,the girl in a previous chapter calling him ‘Suzu’ and a worker saying his face is cute like a girl’s, made me realise it was subtle foreshadowing to Ryou being a trans FTM person. This is actually really well done it’s nice to see representation for the LGBTQ community not done in a kind of fetishizing way or a blatant way where they point it out every second. Well done author!!