"Oh you're ignoring the context of the scene so that you can make your own stuff up"
Yes, context is important, but it doesn't mean that the surface-level context is the only thing that the author/director wants to convey. Guys, creators have complete control over what they put in their work. What may be a coincidence in real life is usually a very deliberate detail in a movie or a TV show. Because almost every detail is monitored, these details exist to convey messages. Something we can take away and reflect on.
For example, the scene in HxH episode 114 (I've already talked about this before, I know), where the narrator is saying how Killua wants to ask Gon if he considers Killua a friend or just a teammate, but he suppresses the urge out of fear. Yes, the surface-level context is just that, Killua wondering if he is just a sidekick or a true friend to Gon, but who knows what else Togashi was trying to convey in this scene? It doesn't have to be just one single-minded idea. The wording of the narration sounds very queercoded if you think about it. Just because that's not the exact context of the scene doesn't mean that it can't also be true.
Or the scene where Killua says he will commit shinjuu. Yes, shinjuu isn't always romantic. Yes, there are different types of shinjuu, and it can also be committed between two close platonic friends. That is probably the surface-level context of Killua's words. But Togashi is japanese, he isn't oblivious, he knows that the word shinjuu has romantic connotations in Japan, and he knows how that word could be interpreted differently. This wording could certainly convey that Killua's feelings run deeper than friendship.
The diamond ring scene in Greed Island. Maybe if this happened in real life, you could brush it off, not even give it a second thought. But this was hand-drawn, hand-written, Togashi had to think of what card Killua would get. It could have been any other card. Especially because we all know how Togashi went into unnecessary detail about how the cards in GI work; we know that he had an intense interest in them. So I don't think he would just draw a random card for no reason. Not only was the card a RAINBOW diamond, a PROPOSAL card, but he also deliberately drew Killua giving it to Gon, with Killua verbally expressing that he is giving it to Gon. Again, if my friend got this card in a gambling game and gave it to me to keep, I wouldn't have cared, because no force had an effect on that happening. But the scene wasn't just a random coincidence, it was hand-picked by a creator.
Details in media can have more than one meaning. I am not taking it out of context, I am taking into consideration the fact that it is fiction, and every detail had to be picked by a creator. So I am just wondering, what was the creator thinking when they added this detail in their work?