I find how characters view themselves interesting, and I think Yamada is very conscientious of how much she eats and is hestiant to bring it up. Also, notice how she didn't actually circle "no" but circled the center dot in such a way that it would seem like she did. Interesting, maybe she doesn't really want people to find out she has a crush on someone?
Also, she likes Corgis and Cats which is an odd combination in terms of dog breeds, however, Corgis are known as herders and tend to get along with other animals, even cats.
Ichikawa doesn't have an SNS ID which I can respect, however, I find it interesting that he has such low self-esteem that he can't think of any strong points about himself, and that he doesn't have any dreams of the future. However, the one piece of information he put into the crush was the letter "Y" as if he was about to write "Yamada," but scribbled it out. (Yamda did the same with the letter "I" for Ichikawa, btw)
I find it interesting Yamada thinks of herself as a large dog breed, which are known for being social and very affectionate, whereas cats are known for seeming to be assholes and very insular and more prone to loner behaviors.
Also, it's funny how completely different their tastes in movies are.
Favorite movies:
https://www.imdb.com/title/tt0289879/
https://www.imdb.com/title/tt0209144/
https://www.imdb.com/title/tt0112431/