Bana's Secret Treasure

Bana's Secret Treasure is a in Xenoblade Chronicles 2. It can be received from in Bana's Bedroom in Goldmouth, Argentum Trade Guild.

Quest objectives

 * Prize open the treasure trove in Bana's Bedroom in Argentum.
 * "Prize it open" requires a Lockpicking level 4 and Ancient Wisdom level 2 check.
 * "Smash it up" requires a Superstrength level 7 and Focus level 5 Field Skill check.
 * "Burn it" requires a Fire Mastery level 8 and Wind Mastery level 4 Field Skill check.
 * Any of them can be attempted to progress the quest.
 * Speak with Niranira in Bana's Bedroom in Argentum.
 * Interrogate.
 * The door leading to the energy room must be forced using a Superstrength and Nopon Wisdom level 5 Field Skill check.
 * Either flattering then threatening or threatening then scolding Bana will make him talk.
 * Report back to Niranira in Bana's Bedroom in Argentum.
 * Complete all three objectives:
 * Obtain one Ether Bottle.
 * Its location can be known by acquiring the info item Switch Parts 1, gotten as a reward from the Merc Mission, Three Parts, or bought from either the Argentum, Gormott or Mor Ardain informants.
 * Obtain one Key-Shaped Lever.
 * Its location can be known by acquiring the info item Switch Parts 2, gotten as a reward from the Merc Mission, Three Parts, or bought from either the Garfont or Tantal informants.
 * Obtain one Filament Globe.
 * Its location can be known by acquiring the info item Switch Parts 3, gotten as a reward from the Merc Mission, Three Parts, or bought from the Fonsa Myma informant.
 * The info items are not required as the quest and items required to progress can still be found despite not acquiring them.
 * Report back to Niranira in Bana's Bedroom in Argentum.
 * Examine the small treasure trove in Bana's Bedroom in Argentum.
 * The trove can be opened with a Lockpicking level 5 and Ancient Wisdom level 3 Field Skill check.
 * Give the letters to Niranira in Bana's Bedroom in Argentum.
 * Give the letters to Niranira in Bana's Bedroom in Argentum.

Results
"The chest contained letters from Bana's mother. Niranira is touched but is determined to continue his search."