I feel that Satou is has ASD but it isn't said outright in the story, the teacher and entire staff should recognize it already, approaching the issue just like Yamaguchi did back when she was writing book report on Helen Keller (ch6) made her understand the issue and complete it.
Glad that Yamaguchi is determined to stay by her side no matter what, not like "net guy", hope she will fall in love just like him, just give it time.
Thanks for the scanlation!