This is a problem I've noticed, yeah. Cause at its heart, I think there's something here, a story about a kid who wants an adult that actually cares about them and that adult struggling with where to and what lines to draw as her manager. But even though he's been pretty normal about all this, just sometimes going through trauma, being confused as to how to proceed, or being surprised by her actions, everything is cast in this skeezy light because the idea that he can just genuinely like this girl and want to help her is out of the question.
Like... here. There is actually a reason to not go in after she asked like that: she's specifically asking it as if he owes her a favor for her replying to his letters. That's something you don't want to encourage, he should go in because she's a kid and she shouldn't be alone when she's sick. While he can be clear about what he's doing and why, it's going to be hard for her to not feel like she made a point and that this was an exchange of favors.
But the depiction shows the danger being horniness rather than a loss of control and turning something he was using as a way to bond with her as a favor she's doing him. What would not be an erotic situation in the slightest is depicted as an aggressive move. It'd be a surprise, and a realization that he's not getting out of this passively, but not in any way erotic. The bits of his thought train re-enforce this, too: the first thing he notices is that she's burning up from the fever. He's concerned, not enticed. Why's it framed like he is?
But again part of me finds this fascinating, because we don't have a full perspective on any of this. Cause to her it IS an aggressive move. This is her throwing everything she's got to keep him with her when she's sick and she doesn't want to be alone. One of the things about this manga that's so interesting to me is how confused Ayano is about what she wants and how earnestly the manga delves into it. She basically just wants an older brother or dad when she describes her ideal relationship with him, but she's looking up dating advice and her friends are telling her she's exchanging love letters. We bounce back and forth between people, and are we seeing Ayano being desperate or Isshiki being flustered? One is interesting. The other is annoying.
Fundamentally
is the core problem. Because I'm genuinely intrigued by the premise, but it feels like people around them are just like "oh, they'll marry in like 10 years that's gonna be great, good on you two" when the actual story that's being told here is an adult trying to figure out how to best help a lonely kid, and that kid trying to understand what it is she's actually looking for.
And sure maybe I'm giving it way too much credit and I'm gonna look back on these posts and sigh. But there's something really compelling here!