Out of context but do u guys now what manga it is on page 18 and 19?

I wanna know too

Me too

So it’s art work by Ayumi kasai she does a lot of manga but according to her works the last two were just illustrations she did and not apart of a actual manga. But there’s a list of manga she’s known for.
https://www.anime-planet.com/people/ayumi-kasai
https://www.mangaupdates.com/authors.html?id=2755

Thank you