I really hope the older dude doesn't have feelings(romantic at least) against tsubaki. I ...

He seems to just see tsubaki as a little brother which is cute and as it should be.

I hope so.

But e still cares _too_ deeply, even if that is the case.

And I've come to trust my instinct in things like this because more often than not, I'm right, but I really hope I'm wrong in this case.

Lol we'll just have to wait and see. This is being uploaded on twitter apparently, so maybe checking out the author's other works (If uploaded on there too) could give you an idea

He cares a lot but he seems like the kind of person who cares because he has a caring personality. He is even considered a mom by his classmates, so i think he's just like this. But well, with manga you never know :(

Yeah...but what set me off was that other girls knowing stare.

Shes perceptive- i think that's the reason she was created in the first place- and she was able to tell that something was amiss when he was talking about tsubaki.

I don't think he's a creep or anything like that- just...maybe a bit too... obsessed?

Mmm I read that scene as her realising the child wasn't comfortable with her and she was very kind for leaving instead of trying to force him to like her, like many older people do with children. That being said, I can't deny that on a second thought I felt it sounded like that random character who understands the real feelings of mc, but realistically I'd say it's more likely she thought he was shy or "jealous" of the bro's attention (like children do).
I think it's ok if he's overprotective, as long as his feelings are just brotherly.

Oh yeah i agree on that but that wasn't the scene i was talking about.

I meant the chapter where he had a band-aid on him and started talking about tsubaki.

The way she stared at him as if she realised something..set me a bit off