r/YowayowaSensei

I have enjoyed watching the first season of Yowayowa Sensei (English sub version), but I have a question regarding the scene where Yuuki mentions having met Akihito’s older sister; from what I’ve skimmed of the manga, it seems like they interact quite a bit, so did their first interaction not make the cut to be adapted into the anime, or does the English sub version cut some parts out? I saw one source say that the different versions may be censored to varying degrees, so I just want to make sure I’m not missing anything.