You may have already thought of this, but the first thing that came to mind was [name_m]Ray[/name_m] + [name_m]Leo[/name_m] = [name_f]Rio[/name_f]? or something similar, like [name_m]Rylan[/name_m] / [name_m]Ryland[/name_m], [name_m]Ronan[/name_m], or even [name_m]Romeo[/name_m]? I think all of those would sound nice with [name_m]Kassian[/name_m].