“Hello? Watashi sumaho desu ga nanika?” (Associated Names)

Ding-dong! “Hello, is this Akira Hibiya-san’s residence?” One day, as a birthday present, a girl-type smartphone called “Extra” with the latest model and super high performance was sent to me, an introverted guy. Ever since registering it with the thrilling “lip pattern authentication” on my smartphone, we’ve been together all the time because “she’s a…