Why is there no "ni" in the sentence?

Nitakimbia haraka sana!

so it would be: visu vyangu ndivyo vibaya sana?

and the n-class?

All these sentences have "indeed" in the middle of them (for the English translation), but we would always put it at the end. "My knife is very bad indeed." Also, generally "indeed" is used for positive, not negative, sentences in English, but that is not a hard and fast rule.