Yeah, there's not a trace of yuri in this.
I think your view of romance has to be pretty narrow to say there's "not a trace" here. But I guess that comes down to personal opinion.
Actually, I have pretty high-powered yuri goggles. But even so, the closest thing I can detect is a single panel out of a 31 page story, when sempai blushes at hearing Komori say she watched her closely.
It's quite simply not a romance story, it's about a girl wanting someone who looked down on her to see her with respect. Thus the ending had nothing to do with getting closer to sempai (which she really didn't), but making her say uncle.