Good, Naoto wasn't fooled by the pregnancy scare. Tokui got much needed development here with the exposition of his backstory. And we get a bittersweet closure for Tokui's first love. Sucks that his ex had to raise her daughter alone for a few years, but good thing she found a new, kind boyfriend who's also willing to be her daughter's stepdad. I hear single parents tend to have difficulties finding a marriage partner.
On pg. 34: Miura is usually a family name, I've never seen it be a female given name until now; So I checked my notes and saw Mio as Yukari's mother's name. But I don't know the kanji. Or maybe Miura was her maiden name before she got married to Mr. Ishihara? But Tokui wouldn't know that, would he? Come to think of it, where is Yukari's father...? I don't even remember if her mother was divorced or single.
Also on the same page "I could be a father to her if she wanted." I guess what he wanted to say here is "I could be a father to her kid if she wanted"?