What do you say when people call you little sister?

Great, I have another brother to commemorate me.

Little sister, a popular word on the internet, as a word popular because of the second element, has a strict definition in the early sense. For otaku, as long as they are about the same age, they can all be called "Little Sister".

Little sister can also refer to calling a little girl older than herself a little sister among underage children in China.

Word source

In the Neon Kingdom, the source of the secondary culture, the Japanese only call it "elder brother" or "elder sister" if they are related by blood. For those sisters who grew up together, the sisters in the neighborhood, some explanations will be added before the title.

Judging from language habits, it is also very appropriate for otaku to call Mengmei "Little Sister", which not only expresses his feelings, but also conforms to grammar.