Note: This game is titled "Iris no Atelier: Grand Fantasm"
Completion bonus: Successfully complete the game and save. Return to
the title screen to access the "Extra" option. Select
it to view various lists, listen to music, and hear the Japanese
True ending: Successfully complete all quests to unlock the hidden
"Truth in Darkness" quest at the board at the Guild.
Complete the "Truth in Darkness" quest, then create
the Shadow Gem by using the item synthesis on Ruby Prism (obtained
from item synthesis on Aroma Material, Brilliant Stone, Dunkelhite
and Dragon Tongue) and Broken Gem (obtained during the "Truth
in Darkness" quest). Then defeat the final Boss, Uroboros.