Yūki Rito

Rito Yuuki is the main male protagonist of To Love-Ru. He is a normal brown haired 16 year old student of Sainan High, and he has a big crush on Haruna Sairenji. He attempted numerous times to confess to her but has met with failure each time. Rito used to be on the soccer team in junior high and was quite good, but quit because he was constantly helping his father with his mangaka duties, thus did not want to leave his little sister Mikan Yuuki alone in the house. Mikan comments he is very good at the most "useless little things", like crane and festival games (e.g. hoops, catching fish, squirt guns). Along with the numerous useless little things Rito is good at, he is also an accomplished florist, gardener, and horticulturalist.

Rito's nature is borderline clumsy, where he always ends up ogling or groping the many girls in the series (though mostly unintentionally). It is only by accident that he encounters, and despite his enduring feelings for Haruna, Rito shows signs of developing deeper affection towards Lala, a troublesome character who at first pretends to show affectionate feelings for Rito Yuuki through the beggining of the story. As the story progresses, he starts to show affections for Lala, but is unsure if what he feels is actually love. This is shown again when he couldn't help but think about Lala, even though he was with a naked Haruna. It is recently revealed that he is in love with Lala, but he is also in love with Haruna. In the end of the series, he confesses to Lala, but tells her he also loves another person (Haruna), yet she is happy on both parts. He is confused as polygamy is illegal in Japan, but Lala replied that once he is the king of the universe the laws of Earth no longer applies. Then, she forces him to go tell Haruna (strapping a jet pack to his back). Right before he was about to tell her, she moves out of the way, just like when he confessed to her very early in the series, leading him to state "I love you" to all of the female cast with the exception of Momo, Mikan, Golden Darkness, and Haruna herself.

Personality
Rito is humble, caring, a gentleman (in principle) and brave when push comes to shove. He's also very loyal, and willing to help out almost anyone when they need it. He's quite shy around women, often looking away when faced with erotic situations. He has also shown that he cares extremely for plants, which was shown in the series multiple times (i.e. when Rito was the only one whou would replace the water in the school's flowers and when Rito's character in the Trouble Quest was that of a florist). Rito was also willing to go to a dangerous planet just to get medicine that can cure his plant's deadly illness.

History
Before Rito met Lala, it was stated that Rito had difficulty talking to girls. His only friend was Saruyama. However, because of Lala's friendliness, and Rito's close relationship with Lala, all of Lala's girl friends became Rito's too, like Haruna Sairenji whom Rito could not even talk to prior to Lala's "descent".

As a child, Rito always helped with his father's manga then would take Mikan to a shrine nearby to play. One time, during his fifth grade, Rito climbed a tree to help a cat who was stuck. This is the time that Yui first met Rito (although it was a few years later during a de javu that Yui remembered this event and Rito's being in it). The cat that Rito saved was the same cat that Yui was trying to save prior to Rito's coming to the shrine. However, Yui was not able to climb the tree and save the cat. She tried to ask some of the boys from her class to help her. However, since the boys hated Yui's leadership as the class representative, they ignored her and decided to play games instead. Because of that, Yui had the impression that all boys are bad. However, due to Rito's bravery, Yui's perception of boys changed, and she realized that not all boys are bad.

During Rito's eighth grade, Rito became classmates with Haruna Sairenji. It was stated that this was the last time that Haruna and Rito became classmates (prior to the start of the series). It was also during this time that Haruna began to like Rito. Haruna says that it was because of Rito's affection for the plants in the school (Rito would always refill the water in the flower vase while no one else cared) that Haruna began to notice him. Rito also displayed his strong determination during his eighth grade when his class was lagging behind the other classes during a school competition. However, Rito never gave up, and ended up winning the trophy for his class.

Relationships with Other Characters
Lala Satalin Deviluke 

Rito first met Lala in the first episode of the series when she teleported into his bathtub while running away from home. At first Rito wanted nothing to do with her, even saying that he didn't like her." But as the series progresses, he became very good friends with Lala, and even falling for her romantically. Rito even states that he feels uneasy when Lala is not around.

A lot of times, Rito is willing to risk his well-being for Lala. For example, when Black, a hit man, pointed a gun at Lala, Rito stood in front of Lala, and refused to move away.

At the end of the original series, Rito confesses his love to Lala, while also telling her that he loves Haruna as well. Lala is ecstatic about this, however, noting that once their marriage is official, Earth laws will no longer matter, and he will be free to marry both Lala and Haruna. Rito is shocked by this, stating that Lala is "too open minded (Chapter 162)."

In the spin-off To Love Ru Darkness, Rito still loves both Haruna and Lala. While his main objective is to confess his love to Haruna, he does show his love for Lala. In one event, after he found out how compassionate she is towards her sisters, he started feeling nervous, and she went to check his temperature. Being so close, Rito's heart raced, causing him to move back, and activating one of Lala's inventions, naturally leading to an ecchi moment between him and Lala (Chapter 10).

As the series progresses, Rito considers Lala and Momo's Harem idea; however, he quickly shakes it off. When Rito teleports to Lala's pocket dimension to comfort Nana, his face teleports in between Lala's breast, tripping them and causing Rito to fondle her breasts while her tail was in between them. Later, when Lala notices Nana's change of mood, she states that it's as expected from Rito, while blushing (Chapter 21).