Why is the symbol ha at end of konnichiwa?

The "ha" at the end of "konnichiwa" is not a separate symbol, but rather a part of the word itself.

Here's a breakdown:

* Konnichiwa (こんにちは) is a greeting meaning "good day" or "hello".

* Konnichi (今日) means "today" and wa (は) is a particle used to mark the topic of a sentence.

Essentially, "konnichiwa" can be understood as "Today [is]..." or "As for today...".

Therefore, the "ha" is part of the particle "wa" and not a separate symbol.