OVA
Description
Rito Yūki is a 16-year-old Earthling living in Sainan City. He attends Sainan High School, progressing from first-year to second-year. Born October 16 under the Libra sign, he is 164.5 cm tall, weighs 62 kg, has light brown hair (depicted brownish-orange in early anime), and gold-brown eyes. His family consists of father Saibai, mother Ringo, younger sister Mikan, and the later addition of the extraterrestrial child Celine, whom he adopts as a sister or daughter figure.

Competitively playing soccer in childhood, Rito quit by junior high to assist his father's manga career and care for Mikan during their parents' frequent absences. This period established his domestic responsibilities and aptitude for "pointless skills" like festival games (hoops, goldfish scooping), crane machines, and gardening—abilities noted by Mikan and observed by peers like Haruna Sairenji. A pivotal childhood incident involved him rescuing a cat from a tree at a shrine, unknowingly witnessed by Yui Kotegawa; this act challenged her negative perception of boys after classmates refused to help.

Rito harbored a longstanding romantic interest in his classmate Haruna since eighth grade but repeatedly failed to confess due to extreme shyness and clumsiness around girls. His life shifted dramatically when Lala Satalin Deviluke, crown princess of the planet Deviluke, teleported naked into his bathtub while fleeing political marriage proposals. After Rito defended her freedom to choose a partner, Lala misinterpreted this as reciprocation and declared him her fiancé. Though initially resistant, Rito developed genuine affection for Lala while maintaining feelings for Haruna, creating emotional conflict.

Rito's personality combines profound kindness, selflessness, and moral integrity with crippling social anxiety. He risks his life to protect others—defending Lala from her bodyguards and assassins, saving Haruna from the alien Ghi Bree, traveling to hostile planets to cure Celine's illness, and freeing the assassin Golden Darkness (Yami) from mind control. His empathy extends even to adversaries, aiding Yami during illness and condemning her creators. However, his intense respect for women and suppressed libido manifest as "Cataplectic Indecency Syndrome," a condition diagnosed by Dr. Mikado. This results in increasingly improbable accidental groping, disrobing, or compromising situations with females, exacerbated by stress. These incidents—always unintentional—lead others to label him a pervert or innocent depending on context.

During sleep, Rito exhibits sexsomnia, unconsciously groping or licking nearby individuals (often Momo or Mikan) while dreaming of food like marshmallows. Over time, his subconscious desires surface more overtly; he dreamt of intentionally fondling Momo, though awake actions remain chaste. Alien technology causes his female alter ego, Riko Yuusaki, to emerge, attracting male attention including his friend Saruyama.

In *To Love-Ru Darkness*, Lala's sister Momo Belia Deviluke falls for Rito and devises a "harem plan": should Rito marry Lala and become Deviluke's king (where polygamy is legal), he could wed all who love him. Momo orchestrates scenarios to deepen his bonds with women like Yami, Mea, and Yui. Rito temporarily hosts the entity Nemesis within his body, and her influence enables his mutual confession with Haruna. Multiple characters—including Lala, Haruna, Run, Yami, and Momo—develop romantic feelings for him, though his indecisiveness persists amid the harem proposal.