It seems that this quest was originally planned to include fighting a strong Wisp and require additional items to collect.
Only during this quest can one fight the Bright Wisp, on cloudy nights at the westernmost part of Digit 3 (where the letters "Digit 3" are on the area's map). Although the Bright Wisp is not a Unique Monster (does not award affinity coin if defeated), it does have a unique name and has over three times the amount of health as the usual Tramont Wisps found in the area. This monster has a 100% drop rate for the Wisp Bliss Ring, and more interestingly, always drops the key item Strong Lubricant Oil, which was probably meant for this quest originally. Furthermore, the Bright Wisp can respawn like any other non-unique monster if the party has not yet collected the 5 Silver Antol Fibres needed for the quest, making it possible to collect more than one Strong Lubricant Oil. Strangely, this key item disappears from inventory after the quest is completed; however if more than one has been collected, only one will be removed.