Who are Mucyechuru and Musaza from the book, The Girl Who Smiled Beads?

Mucyechuru and Musaza are the elderly couple Clemantine befriended while living at the UNHCR refugee camp. She liked spending time with them because they told her stories that helped distract her from her life. Like Mukamana, Mucyechuru and Musaza let Clemantine invent the storylines and endings of each tale.