Marina Setouchi Guest's girlfriend. She is head over heels for Guest but gets incredibly angry when other men talk to her. (Could she be the same person as Marika!?) First person: I (feminine, sweet)

Marika Setouchi Marina's younger sister? Her hair might be a wig. (Are Marina and Marika the same person?) She gives Guest the cold shoulder. She actually wants to be sweet to Guest, but she holds back because she doesn't want her true identity to be revealed. Her name might be an alias. First person: I (cool, distant)