The opening theme, entitled “Hitoribocchi no Monologue” (“A Lonely Monologue”), is performed in-character by Hitori Bocchi (CV: Chisaka Morishita), Sunao Nako (CV: Minami Tanaka), Honsho Aru (CV: Akari Kito), and Sotoka Rakita (CV: Yūko Kurose).
Hitori Bocchi, a girl with extreme social anxiety, has had only one friend throughout elementary school.
(“Hey, Let’s Go Home Together.”), is performed by Bocchi Hitori.