Why suddenly the meta? The story was perfectly fine the way it was.
It's in a different art style than the rest; it's rougher. I think it's best to just assume it's a sidestory because the artist felt like it, and that you'll be returned to your regularly scheduled yuri when the artist feels like it.
Mhm, morning.But I've actually... never done it before...Good morning!Okay!It's okay.Erm... I wanted to discuss something with you, Yuna-san...Hm? What? What about?Erm...Cute...We are going to do a kiss scene today...I don't know what to do...Right now...Want to try practicing it?I'm falling in lovelike a drama.