Warden of the Dead (2007)

A thirteen year old kid, "the boy", lives and works in a cemetery. The cemetery is his whole life, and growing up with the dead instills in him an obsession and respect for death. His friends depend on him: An unhappy old man, a former political prisoner yearning for death, and makeup artist for deceased, a former artist who dreams of painting a masterpiece. The boy does what he can to help them. The old man attempts suicide, but upon learning the date of his death and seeing his beautiful plot chosen for him by the boy, he is able to bear his life. Upon meeting the beautiful Maria, "the boy" gives the former artist a surprise date with her. But when Maria and the artist become closer, the boy realizes that she is the daughter of the old man. The kid thinks the old man would die unhappy if he knew of her existence and so decides to hide the truth.

Unfortunately the movie Warden of the Dead is not yet available on HBO Max.