Kadena sounds like a girl's name due to "a" at the end. You can keep at as a "true" name but let characters refer to them as as "Kade".
Or give them different allies for safety.
Viewing post in What's behind the names Pt.1 comments
Instead of "Kade" maybe MC's allies could been ""Jade", or "Mist", or "The Mask". Something that gives them anonymity in their world for their own safety, and as a narrative tool for players to speculate about MC's true name.
Regardless if MC's true name "Kadena" or whatever. Has anything to do with the plot, as long as you don't give players false hopes they will be already intrested in MC.