Unarmed Minion tells you, "Yes, I still obey the Master. If you have the Glowing Virindi Cloak, I will take it in exchange for the Singularity Katar. Please. If you have a Singularity Katar, let me enhance it for you. Please?"
You give Unarmed Minion Glowing Mosswart Shroud.
Unarmed Minion gives you Singularity Katar.