Sairenji Haruna

Haruna Sairenji is the second female protagonist of To Love Ru and one of Rito's classmates and the girl of his affections. Haruna has similar feelings for him, having been attracted to his kind, gentle nature since junior high. Despite her growing love for Rito, which she believes to be unrequited, she usually suppresses her feelings and cannot confess to him because of her friendship with Lala who also loves Rito. However, with some encouragement, she tells Lala of her ordeal, to which Lala accepts, claiming Haruna as her rival for Rito's heart, while remaining friends. There is also a running gag to where Rito is about to confess to her, only for something (or someone) to come between it. She is affiliated with the tennis club and a southpaw.

According to Mio Sawada, Haruna's measurements are B79, W56, H82.

Personality
A highly responsible person, Haruna's personality can sway her classmates' hearts to vote for her as their class representative, even when she did not run to be a candidate, she has also shown to have great leadership and is able to keep everyone calm when they are panicking.

Haruna can also be a very kind, understanding and patiant person, an example of this is when she's is genuinely polite to everyone around her especially to Rito dispite his perverted clumsiness, she always manages to forgive him but she does occasionally slaps him for it.

In the beginning she wasn't aware of her own feelings for Rito until she confessed them to Lala (confirmed by Oshizu in the manga before hand) and is very shy and hesitant to expess them. Secretly she enjoy's his closeness like when she was turned into a cat by one of Lala's inventions, Rito found her (unaware that it was Haruna) and started playing her which she claims it's like being in heaven and didn't mind being his pet but quickly shakes it off (To-LOVE-Ru Darkness Chapter 13.5). Another example is when she was drunk off Deviluke herbs she couldn't help but cling on to Rito (half naked and wet) and says that he's all her's for the moment (To-LOVE-Ru Darkness Chapter 26).

She has a severe fear of ghosts and the supernatural with the exception being Oshizu Murasame but only for a while. When frightened, she has a habit of grabbing the nearest thing around her – typically Rito – and swinging wildly, in an attempt to get rid of whatever frightens her.

Powers and Abilities
Even though she seems shy and weak she has more strength in her than everyone thinks. Her strength is often shown when she is frightened of something, capable of throwing an actual person (mainly Rito) and knocking back the thing she's scared of.

Rito Yuuki
Haruna is a very kind, patient and understanding girl. More than most other girls in the series, Haruna has always known about and loved Rito's positive traits, despite also being a frequent victim of Rito's perverted clumsiness. Haruna first took noticed of his existence when he won the school festival for is class, she has realized and remembered that he must be a kind person since she noticed him taking care of the flowers at school when they are neglected by others, because of this she was the only person who believes he wasn't the one responsible for damaging several plants in the school garden.

Unknown to Haruna, Rito has harbored affections for her since before the start of the series, but because of his shyness and clumsiness, his numerous attempts to confess his love to her ended in failure. And unknown to Rito, Haruna has held affections for him as well. But she is hesitant to begin a romantic relationship with him due to her friendship with Lala, who is already pursuing a relationship with Rito.

Lala Satalin Deviluke
Haruna and Lala are best friends. It is because of her friendship with Lala that Haruna has been hesitant to pursue a romantic relationship with Rito. Lala, on the other hand, knows about Rito's feelings for Haruna, and is very enthusiastic to see them get together, believing that both girls can marry Rito together, as Japan's customs would no longer apply to Rito when he marries Lala and becomes King of Deviluke.

As of To love-Ru Darkness, she has learned that both she and Lala can marry Rito together, which greatly surprised her, realizing the reason for Lala's cheerfulness about Haruna's feelings for Rito. She currently doesn't quite know what to make of the newfound possibility.

Oshizu Murasame
Despite Haruna's huge fear of ghosts, she has become very comfortable around Oshizu, and the two have become good friends, and are often seen together. Oshizu is the first to learn of Haruna's crush on Rito after briefly possessing her, and becomes very supportive and encouraging towards Haruna confessing her feelings to him.

Akiho Sairenji
Haruna lives with her older sister. Occasionally she would tease Haruna about certain things like having friends over, which she greatly dislikes, but they do get along closely. She suspects that Haruna and Rito have romantic feelings for each other, and is "gleefully" supportive of them.

Risa Momioka and Mio Sawada
Risa and Mio are Haruna's close friends, and are often seen together in school. Haruna is less than amused by them constantly groping her.

Trivia
She have a cameo appearance in Mayoi Neko Overrun chapter 6 together with Oshizu.