Okay but like HugoRin where Hugo KNOWS how much he looks like Sae and of course EVERYONE has picked up on the weird dynamics between the Itoshi siblings, so he uses that to his advantage with Rin, praising him and getting him addicted to that praise so he keeps coming back around to Hugo and becoming dependent to him because if he squints just enough then It's like Sae is the one praising him and he just can't get enough at the possibility of that.
I love this so much!
Hugo, for me, comes off as a truly shameless and morale-less person who would do anything to devour the object of his affection (Rin) and he doesn't mind imitating Sae to reach that goal.
He slowly but surely breaks Rin's hard walls and pretends to be a caring friend or senior who sees potential in him. At first it's all about soccer but then he starts saying how it's a pity that a prodigy like Rin has to run after Sae when it should be the opposite. "You're a gem for all midfielders" "if you were my baby brother, I'd never think of playing soccer without you"
It's as if Hugo is the manifestation of all of Rin's dark and guilty desires, especially how attentive and sweet Hugo is like his Nii-chan from the past who spoiled Rin. It gets more addicting as Hugo starts to touch Rin more intimately and casually compliments him while looking so similar to Sae that it made Rin's taboo desires purr from satisfaction. And just like Hugo desired, Rin became dependent on him to feel assured about himself and getting the attention he so badly desired and it didn't take long for Hugo to lure the younger into his bed, purring under him and looking at the face that resembled his big brother with an infatuated look while his body opened up obediently for Hugo.
