Condolence
Loss lingers and it is man to feel. I once read that our tears are our emotions spilling out. Though you don't talk much with your uncle, your feelings will surely come across to him in the afterlife because of your sincere tears of emotion.
This might be late, but condolences sigma! I know it's hard but just think that your uncle is in a better place now. Also i'm sure he wants you to live your life happy and doesn't want you to be sad.
Condolences to Sigma-sama! May your uncle rest in piece and hope that you too find peace with what happened. It is ok to cry, even cry a lot, even if you are a man. I hope that after crying, you'll learn how to stand up again