Aside from seeing some of Touko's home life, her parents' perspective, and Yuu struggling to hold back and showing signs of being more and more attached to Touko, nothing else is new lol. We've already determined from chapter 10 and 13 that Yuu is gonna be super fucked when she does feel romantic love for Touko. And I don't mean 'return her feelings', I'm pretty sure that Touko's "love" isn't on the same level of what's building inside Yuu atm.
It's why I'm surprised to see ppl comment that they want Yuu to fall in love already, I feel like they're forgetting very important points.
It's been difficult to root for Yuu to fall in love and realise precisely because Touko's own desires and expectations for Yuu are a massive hurdle. Sure we'd normally want to her to reach such a checkpoint at soon and smoothly as possible, but in this case, it's like, the final boss. Touko is the final boss. Touko may have been the one to initiate their relationship, but it was only at her own convenience, and because Yuu is tolerant and easygoing af. Given how things are, Touko could very well be the one to end things too, the moment they don't fit her needs anymore. More of her narration highlights Yuu's kindness, her patience, her tolerance at letting her do these things, these things that soothe her. Aside from these points that benefit her personally, I don't really remember Touko talking about anything else.
This is all building towards angst since early on tbh, it's been foreshadowed for so long.. Whatever Yuu decides to do when she realises and acknowledges how she feels, it's clear that from how things currently are, and how Touko is, that if Yuu wants to remain by her side, she can't act on it, she can't reciprocate. She would have to give up love.