@BestBoy
I've got a theory that they are drawn to convey a dormant mood of isolation and awkwardness in Mito,
usually hidden under a facade of unscrupulousness and swaggering, but I might be wrong.
In spite of this, I like them and their owner.
Though she never admits it publicly, she could be starting to suffer from loneliness:
that may be another reason for hanging around Tome and Satoru