Nana Astar Deviluke

Nana Astar Deviluke is the twin of Momo and sister to Lala. She is the second princess of Deviluke. She has the ability to speak to and understand animals. Out of all the main female cast she has shown the least attraction to Rito, regarding him as a "Beast". Although she like the rest has developed feelings of her own for Rito, though the emotion seems closer to a brother complex.

Appearance
Nana has long pink hair and purple eyes. In both To LOVE-Ru and To LOVE-Ru Darkness, Nana has pig tails. Like all Devilukeans, Nana also has a long black tail at her back, and like her sisters, she has a spade-shaped tail end. Nana also has a smaller bust than Momo which the latter sometimes envies. When Nana turns into "evil Nana", she acquires super human strength and she can send a bunch of big muscular men. Her pupils also become thinner and pointed!

According to VNC, her measurements are completely unknown.

Personality
She is generally far more short tempered than her twin. She also turns into "brave Nana" whenever her friends are in trouble. Examples of this event are when she desperately risks her own life just to save Haruna and her dog, when Mea is trying to scare Nana away, or when a poor little monkey is about to get hit by a truck. People have generally stated Nana becomes totally epic whenever she turns into "brave Nana". When Nana becomes "brave Nana", she becomes more bold and nurturing. Nana calls this state her protect state, a state that Haruna and Mea have commented that it has a tremendous amount of bloodlust.

Nana's most active and noticable relationship is with her twin sister Momo. While the two love each other and are often seem spending time together they are naturally polar opposites. From an early age they have always been fighting and it was only through the efforts of her elder sister Lala that there relationship remained good.

Nana envys Momo for both her confidence and her beauty. While Momo possesses a similarly developed figure to their elder sister and mother, Nana is far less developed and is very sensitive about the fact. She is also the most immature of her siblings even compared to Lala who while acting childish at times, has a very motherly and mature side.

Biography
Ever since childhood, Momo and Nana always fought. Whenever they fight, their older sister, Lala, would always make a way for them to make up, and for Zastin not to be angry with them. An example of this is when they were children, and Momo and Nana were fighting. Zastin scolded them for fighting, but Lala caused her inventions to run amok then asked for Momo and Nana's help to catch them, so that Momo and Nana will work together, and so that Zastin would direct his anger towards Lala instead. Momo first made an appearance together with Nana in Chapter 97 of the To LOVE-Ru manga. They were responsible for the Trouble Quest, an RPG game that they programmed to see the true character of Lala's friends. After seeing that Lala had great friends surrounding her, they returned to Deviluke. A few chapters later, they went back to Earth after escaping from Deviluke and their studies. However, they forgot that Zastin was also staying on Earth, and was instructed by Gid to bring the twins back home. They tried escaping, but when Momo and Nana started fighting each other, Zastin, Maul and Smutts were able to catch up to them, and a battle ensued. It was revealed that Momo and Nana also have D-Dials, but instead of gadgets, they were able to summon plants and animals, respectively. In the end, they defeated Zastin and his henchmen, and they convinced their father that they're going to stay on Earth with Lala.

During Momo and Nana's stay in the Yuuki household, they created their own house in the attic using space distortion. They also took care of all their necessities to avoid bothering Mikan for cooking, cleaning, etc. However, they still come down sometimes to eat Mikan's cooking.

Throughout the series, Nana unconcsiously develops affectionate feelings for Rito. Of course, she consciuosly dislikes him and thinks of him as a beast! Because of this, Nana usually has dreams of Rito "sexually" advancing towards her and she screams out "You beast!" in her sleep. Whenever she's asked of the situation, she glares and says, "Oh that Rito.....he's a beast!" and says no more. At this point in time, Nana was completely confused whenever her sister said, "Oh, I can always be Rito's mistress.".

In To LOVE-Ru Darkness, Nana, along with her sister, become Sainan High's students, she makes friends with a girl named Mea and she gets shocked whenever Mea admits something perverted to Rito. Eventually, the friendship between Mea and Nana becomes very strong; however, Mea turns into her semi-weapon form and tells Nana that their friendship was not real! Nana was petrified and tramatized after she saw Mea's true form and personality. Rito tried to console Nana.

When that didn't technically work, Rito embraced Nana. With that hug alone, Nana finally realized what she had to do. She had to approach Mea and "open her heart". Obviously, Mea used her semi-weapon abilities to scare off Nana again; however, Nana has shown a huge amount of courage and she faced the heartless semi-weapon. Nana stood there boldly and she confessed her care for Mea. This somehow opened Mea up. Finally, Mea understood what a friend truly was. This part of the story has shown Nana's bold bravery against something quite deadly, and this has shown Nana starting to open up to Rito. In fact, she even tried to sleep in Rito's bed once.

Lala, Haruna, Momo, Yui, Yami, Mikan, and Run are part of Momo's "Harem Plan"? Yes, it turns out that even though Nana is trying desperately to keep the other girls away from Rito, she's only indirectly creating her own unification of the entire female cast. Are Saki, Rin, Mea and even Dr. Tearju taken under consideration? Indeed, eventually, Nana's own efforts will help form the "Harem Plan". Ironically, Nana is counsciously trying to do the complete opposite.

Trivia

 * Like the other parts of the Devilukean family, Nana's second name is a reference to the demon, Astaroth.
 * The Japanese name Nana means grace ironically, due to Nana frequently shown temper and violent behavior