DIVA Happiness Level (Extend)
Character moods are determined by how much attention you give that character. Depending on their mood, they can have different poses. Scroll down to find out. You can lift their moods by game-playing with that character and/or giving them presents in their DIVA Room. You'll be able to tell when characters' moods are down by their body language when you select them in Character Select. Or, when unsure, you can view the Character Mood Viewer (キャラクター機嫌確認) chart through Player Records (プレイレコード) on the Main Menu. The moods of all characters will fall when you fail a song.
You might find if the present suits that character (the nendroid figures suit them perfectly), or it's an expensive item, they will cheer on the spot (and the item will become a room feature). Such items have a bigger impact on mood change. At first when you do not have a characters DIVA room it will appear to be in a good mood. Some characters such as Meiko, Neru, and Haku are easier to cheer up than Luka, Rin, Len and Miku. Miku is mostly always happy as well.
(Note: Giving a character a certain kind of item (i.e. wall item, shelf item) as a feature item and then giving another item of the same kind will replace the previous item and you won't get it back. For example: if Neru already has the telephone as her feature item and you give her a Nendoroid Neru, the Nendoroid Neru will take the place of where the telephone was.)
These particular pairings:
└ Floor - Heart-Shaped Cushion
└ Floor - Leek Pillow
└ Shelf - Miku Flower Basket
└ Shelf - Wrapped Candy
└ Shelf - Nendoroid Hatsune Miku
└ Wall - Hanging Scroll (Angel)
└ Wall - Miku Birthday Poster
└ Shelf - Nendoroid Kagamine Rin
└ Shelf - Nendoroid Kagamine Len
└ Shelf - Nendoroid Megurine Luka
└ Shelf - Nendoroid KAITO
└ Shelf - Nendoroid MEIKO
└ Shelf - Nendoroid Akita Neru
└ Shelf - Nendoroid Yowane Haku
└ Shelf - Nendoroid Sakine Meiko
Depending on the characters' mood, their poses can change.