Talk:Uruka Minami/@comment-69.245.195.9-20151020193244/@comment-10733658-20151021113444

It's a difference of the relationships and social dynamics.

Touka is generally younger than the others, so it's more acceptable to call her by her personal name. That or the people are close to her.

On the other hand, Arima and Fura are Minami's classmates. As such, it's not really appropriate for them to call her by her personal name since they aren't close friends.