The light novel series written by Yomi Hirasaka and illustrated by Buriki, which the TV show is based on, was first published in Japan.
The first season of the Haganai anime television series aired in Japan, introducing the story of the Neighbors' Club.
The second season of the Haganai anime, titled Haganai NEXT, aired continuing the story with new episodes.
Original video animation episodes related to Haganai were released, expanding on side stories and additional content for fans.
Kodaka Hasegawa and Yukimura Kusunoki establish the Neighbors Club to make friends and improve their social lives.
The Neighbors Club holds its inaugural meeting, attracting several members including Yozora Mikazuki and Sena Kashiwazaki.
Rika Shinozaki, also known as Rika, joins the Neighbors Club, adding to the diverse group dynamics.
The Neighbors Club goes on their first trip together to a hot spring, strengthening their bonds.
Tensions between Kodaka and Yozora become apparent due to misunderstandings and personality clashes.
The club organizes a Christmas party, where relationships and friendships deepen amidst festive activities.
Yukimura decides to work hard on his social skills after encouragement from Kodaka and other members.
Sena opens up about her insecurities and struggles despite her popularity and looks.
The Neighbors Club attends a summer festival together, experiencing new social situations and growing closer.
Members of the Neighbors Club help each other prepare for final exams, highlighting their increased camaraderie.
The school year ends with thoughts of graduation, as some members contemplate their futures and friendships.
