The word asahina in Japanese means "morning sun," as well as "morning equal/comparison", or "sunny place".
In Japanese the word asahina is surname.
The actual meaning of asahina in Japanese will also depend on the kanji that is used.
The word asahina is composed of "asa" meaning morning, "and either "hi" meaning "sun" or "hi" meaning "comparison," combined with "na", a phonetic character or a word meaning "what".
Morning sun is the most common interpretation of the word "asahina" in Japanese.
Another interpretation of the Japanese word "asahina" uses "asa" and "hi" can create this sense of morning equal/comparison.
And the "na" is a phonetic character which completes the name, adding a common Japanese surname suffix.