Diana (The World God only Knows)

Diana (ディアナ Diana) is the third of the Jupiter Sisters. She resides within Tenri Ayukawa. She is the first goddess to be revealed.

Personality
In sharp contrast to the shy Tenri, Diana is confident and assertive. She is also intelligent and perceptive. However, while she cares deeply for Tenri, she shows little regard for others. She is also rather selfish, as most of her actions are done for the benefit of Tenri or herself. Given that she is a divine being, she displays a degree of arrogance, presenting herself as being superior to others.

With regards to romance, Diana is surprisingly innocent, especially given her frequent attempts to pair Keima and Tenri. While Tenri is asleep, she claims to have never been alone with a man prior to meeting Keima and seems to hold Tenri's kiss with Keima some significance, seeing as she inhabits Tenri's body.

Appearance
Diana's true appearance is never fully shown. A silhouette of her face is shown, however, indicating that she has long flowing hair. When she posseses Tenri, Tenri's eyes become sharper, her hair color changes to dark blue and her pupils turned red.

Abilities
It is unknown how powerful Diana really is. Whenever she takes control of Tenri's body, she becomes powerful enough to be able to cut Haqua's hagoromo easily and even hinder an enraged Nora from using a big mace to crush Keima. Diana also seems to be an exceptional strategist - or at the very least a great tactician - supported by the fact that she is an excellent shogi player, beating experts like Nanaka and Keima with relative ease.

In an Omake, Diana tells Tenri that she can also perform magic such as splitting the sea and controlling the weather.