The cause of the affliction affecting the Scions is revealed to have been the prior attempts by the Crystal Exarch to bring the Warrior of Light to the First, which had, instead, brought the souls of the Warrior of Light's closest allies. Though their physical bodies were left behind on the Source, their souls created corporeal bodies on the First. As time flows differently between the Source and the First, Alphinaud had been on the First for a year prior to the Warrior of Light's arrival.

After arriving on the First, the Warrior of Light reunites with Alphinaud, who had been in the region of Kholusia investigating the city of Eulmore. By posing as an artist under the patronage of Dulia-Chai and her husband Chai-Nuzz, Alphinaud gains access to the city. He soon draws the ire of its leader, Vauthry, and departs. When the Warrior of Light is given the new role as the Warrior of Darkness, Alphinaud assists them in finding and defeating the Lightwardens in the regions of Lakeland and Il Mheg alongside the other Scions. After the defeat of Titania, the group splits up to locate the remaining Lightwardens, with Alphinaud returning to Kholusia to investigate.

He is unable to gain any additional information on the location of the Lightwarden of Kholusia, and regroups with the Scions in the Crystarium in time to help defend Lakeland from an attack by sin eaters sent by Vauthry. The group later defeats the Lightwarden of Amh Araeng before returning to Eulmore to drive Vauthry, revealed to be a Lightwarden, from the city. The Scions travel to The Tempest to confront Emet-Selch, one of the Ascian leaders whose previous host body had been that of Emperor Solus. Alphinaud and the other Scions use White Auracite to contain Emet-Selch, allowing the Warrior of Darkness to kill him. Alphinaud then returns to Eulmore with Lord and Lady Chai to complete the portrait they commissioned from him.