Ideas:

1. There is a similarity between this type of glyph and the type of glyph initiating the 8 periods in the calendar of the month in Mamari. Could it be that this man is climbing out of an egg?

2. If he is climbing out of an egg, that might signify birth. But consequently also death, the way to reach immortality. Only those who are already dead can avoid the scythe. (A symbolic death does not help, I'm afraid.)