He’s the top deity of the Djaga tribe in the beautiful surroundings of Kilimanjaro. Nice work. A magnificent bit of creation there. He must be very proud of it.
To go with the glorious view, he created his own Eden-style Garden of Kilimanjaro. And true to form he placed at the center a yam tree with accompanying forbidden fruit policy.
Naturally you know what happens — Someone comes along to spoil it all. Not a beautiful woman wearing a fig leaf (mankind was already well established by this time); just some random guy. Probably a tourist on a mountain-climbing expedition.
"Oooh, look. A yam tree," he said. "Yams are delicious. Come on everybody, try one." And suddenly it was yummy yummy yam time.
RUWA, who had been out for the day, returned to discover his own personal delicacy ravaged to extinction. He was furious. Yes — the usual punishment. Death. No more immortality.