Oh my lord she went full dere-dere, in the most endearing way for me. This was the best chapter hands down.
I love how this chapter shows how physically affectionate Chiyo is, and how much she holds back on a daily basis so as to not overwhelm Yuu-kun. Though, I really wish we'd see her letting loose like this every so often.
Her blissful expressions as she had her hair caressed and played with were so sweet and wholesome. I especially loved the shot of Yuu giving her a lap pillow. Her visage/profile of reading books with her glasses hit very close to home and reminded me of my own older sister. This series has some really striking art drawn in the most beautiful way.