Unlock Bonuses
Your final end-of-game evaluation based on what you did in the game will determine what you get once you beat the game.
Dark Sun (Dark Chibi) - Beat the game.
First Sunrise (Chibi Shiranui) - Complete everything.
Karmic Returner (Original Amaterasu) - Beat the game.
Moon's Legacy (Made of Ice) - Complete the Treasure Tome.
Painter's Legend (Ishaku's armor) - Complete the Bestiary.
New Game+
Complete the story, save your game when prompted, and select Continue on the title screen to begin a new game with all the health and ink pots earned in the previous save, as well as bonus items you might have earned.