V1 P6
78% "We were following upstream of the Gupi River, heading for the origin of the Renard River."Is this a correct translation?
It makes sense that they are following the Gupi River, as that is the cause of the problems. However, we are told earlier that the Gupi River is a tributary flowing into the Renard River (V1 P4 37%). If you follow the Gupi River upstream, you will reach the source of the Gupi River, not the Renard River.
Technically, you could argue that the source of the Gupi River is a second origin point of the Renard River (due to the Gupi River being a tributary) but is that what the author was aiming for here?