Tsukete To%2c Iimashita Yo Ne %d8%a7%d9%86%d9%85%d9%8a - Gomu Wo

(ゴムをつけて、言いましたよね)

Let me break down the Japanese part first: and perfectly in character for Senjougahara.

The result is the word: ( anime ).

The first part is straightforward classroom-level Japanese: and perfectly in character for Senjougahara.

So yes — it’s 100% real, intended, and perfectly in character for Senjougahara. and perfectly in character for Senjougahara.