Re: Nao x Yuu: I definitely don’t feel any romantic tension between the two of them as of now, coming from Yuu’s side especially. However, and this is speaking from experience, people who are teased as “going well together” have a higher chance of actually getting together. Despite neither of them being interested in each other previously, as long as one of them is interested in a romantic relationship in general (which we know Yuu is), it’d get them to start thinking, and start being more interested…
Not sure if he has the chance to think of that from here on out, though.