I believe kaikaina specifies the same sex. Poki’i is a younger sibling. Thus I would hope both are accepted. If not then report it.
Muli loa is not in manomano.io but wehewehe.org explains that the word muli can mean youngest and loa can mean one - youngest one. This would not fit for the given question. ‘Opio is a young person - juvenile.
Ps I find Imtranslate and google translate unreliable.
He haumana au.
Aloha e Mike421411. I see you are DL+ and have higher haumana rank than I do. Ah well. Here is cut and paste from a Hawaiian grammar document.
Aia for Locational Questions
The Aia construction can be used to ask locational questions as well. The unknown location of the thing is expressed with either i hea or ma hea. For example, “Where is Keola?” is expressed as “Aia i hea ʻo Keola?” There are actually four ways to ask this question because the ʻami “ma” and “i” are interchangeable and the ʻawe and piko position can be switched: Aia ʻo Keoni i hea? Aia ʻo Keoni ma hea? Aia i hea ʻo Keoni? Aia ma hea ʻo Keoni? The most common ways of asking this question are the last two above. (Kamanā/Wilson 2012:30) Voice intonation must also be used to express these as a question.
Hope this helps.