^Could be...
Look at the way the groupings are done, the way the little light pinpoints migrate on Yuri's eyes depending upon which direction her head is turning, the motion captured when Yuri jerks her hand away, the shifting details of Yuri's hair with different points of view, Tomoko's range of facial expressions, the little perspective angles showing background.
The writing rings really true, as well.
If it's not the mangaka, it's absolutely amazing work.
But whoever it is gave up on Akane's face in panel 5.
last edited at Sep 27, 2018 8:39PM