Gumi Samegawa's Links
While she can be a bit closed off and reclusive, Gumi still cares for her mom. She doesn't particularly being treated like a child even in her adulthood, but she tolerates it because she doesn't like seeing her mom feeling lonely.
While she doesn't fully understand Gumi's anxieties about the outside world, she still fully supports and lovingly cares for her only child. She feels really happy to see Gumi slowly reaching out to people and socializing more.