Recently, the word "Naimuban dd" appears more and more frequently in social media and some online communities, but for some people, its meaning is not very clear. In fact, "dd" is one of the ways that Japanese people especially like or support someone, which is also an expression of "push". The development of this cultural phenomenon is closely related to the prevalence of Japanese idol culture and the convenient use of social media. As a way of expressing love and support, "dd" is also regarded as a manifestation of fan culture.

Nogizaka46 is a large Japanese female idol group, founded on 20 1 1, and is one of the sister groups of AKB48. Naimuban dd refers to the supporters of Nogizaka46. They usually buy Naimuban's official peripheral goods, support idols at concerts and handshakes, and share photos and videos of Nogizaka46 on social media. For some Naimuban dd, they may be more focused on supporting one member than the whole group.

Although the word Naimuban dd originated in Japan, with the continuous spread of Japanese culture, it has gradually attracted the attention of global idol culture lovers. No matter in Japan or other countries, idol groups have a fan culture similar to Naimuban dd. On social media, fans can use specific tags (such as "# Naimuban dd") to contact each other, discuss and share more information and experiences about Nogizaka46.