OMG which ch did u noticed this ε=ε=(ノ≧∇≦)ノ Mirofox
At the aquarium, you get a little peek (i though it was a speck or the fluids in his mouth [my first time seeing one drawn in manga ,so I was hella skeptical lmao] ) But the chapter after that you can see it much clearer (I face palmed when I realized I was dumb thinking it was something else lol)
This nigga Ono got a fucking tongue ring lol