Sumatra Chronicles was pretty much a recount of the future Renduldu had seen through his future sight ability. His goal was to bring back the reincarnates.
But, to make it seem like an action he took in anger upon seeing the negative reviews, Renduldu hid the truth from them.
This meant that the lives of Inala and the other five reincarnates were simply edited out in Sumatra Chronicles, to hide the truth. That resulted in a sad conclusion. In Sumatra Chronicles, Resha's parents returned after the First Major Disaster with a baby Empyrean Tusk in tow.
They seemed distraught due to whatever they had experienced during the mission. A few days later, after teaching Resha all the Skills they had gained during the mission, they committed suicide.