Yep it's possible.
1 - in MgalaxyRunaway Create a new "sega naomi" system.
2 - Rename it "Sega Hikaru"
3 - Configure it
4 - Save and exit
5 - Open the file "mGalaxy\Data\UserSystems\UserSystems.xml"
6 - Search the hikaru system ("<UserName>Sega hikaru</UserName>")
7 - edit the Cmd line to be look that
<Cmd id="0" hidden="false" name="DEmul [Script]" value="-run=hikaru -rom=%file" />
8 - Save all, run mGalaxy.
Edit : oups, sorry I have made my post during mGalaxy answer ^^.