ข้อมูลอนิเมะTo LOVE-Ru Darkness OVA

Prologue: Momo tries to get Rito’s attention by changing her hair style, but has little success. Momo then learns from Lala that Rito loves both Lala and Haruna, and since he will become king of Deviluke he can marry both girls, and return both of their love. Inspired, Momo begins a plan to eliminate Rito’s indecisive nature and create a harem for him, so that Momo and the other girls who love Rito can have their love for him be fulfilled. Pollen Plan: A drunken Celine sprays Mikan with pollen, causing Mikan to develop romantic feelings towards Rito. As she waits for the effects to wear off, Momo learns of her plight and “helps” by leaving her alone with Rito. Mikan succumbs to the effect of the pollen and nearly kisses him, but manages to regain her senses at the last minute. Momo decides Mikan is not yet ready to accept her own feelings, but promises she will include Mikan in the harem. Body Touch: Thanks to one of Lala’s inventions, Haruna is turned into a cat and wanders the streets contemplating what to do. Remembering that Nana can speak to animals, she goes to find her, but runs into Rito. Circumstances then force Rito to give Haruna a bath, which becomes too much stimulation for her causing her to revert to normal, albeit naked and on top of an unconscious Rito. An embarrassed Haruna is then left to explain the situation to a confused Mikan.

Nostalgia: Kotegawa Yui is going to look at cats on the pet store as usual when she finds Rito on the way, they encounter the skunk of youth who broke free from Run's house. Rito tries to grab it but scares it and him and Yui end up turning young again. Eventually all of Rito's friends are turned into kids. Rito eventually was able to catch the skunk from a high wall where he almost fell but was saved by Yami. The skunk was then put into Nana's Phone where it won't disturb anymore. Back in school Yui asks Rito if he used to play around a temple she walked by and he confirmed, she then remembered he was the kid who saved a kitten that was stuck in a tree when she was young. The Changing Heart: Nana enters Rito's room wanting to talk to him, she asks him if he likes big breast girls. He blushes and starts imagining big breasts, Nana seems upset but Rito replies to her saying it's not the breast size that matters and Nana even not having big breasts has her own unique appeal. Nana removes her shirt and gets on top of Rito asking him if he sees her as a woman. Rito desperately tries to get away but grabs her breast, she doesn't slap him and leans to kiss him. Momo bursts out of the closet to stop them. Momo and Nana had switched minds with one of Lala's inventions and Momo was the one in Nana's body. They walk away with Nana (now in her body) blushing and thinking about what she heard Rito say. Flower: Rito finds Celine playing with some flowers he's never seen. He smells a pot that has purple flowers and then walks away. Momo finds Celine and explained how those were her flowers and no one should smell them because they can have side effects, Celine told Momo Rito had smelled the purple flowers and she was really worried since those flowers change one's personality. Rito demands Lala to give him her see through glasses and asks her to pose for him. Excited, Rito starts asking for more breasts and runs to school where he looks at each and every girl and even looks closely at Yui's privates. Momo finds Rito and heals him before anything worse happened. Rito Falls unconsious on the floor from all the things he saw.

Exchange: The episode starts with all of Lala's inventions scattered across a table. Lala is called to help Tearju Lunatique with the copier. Rito and Haruna accidentally change bodies when they catch one of Lala's inventions falling off the table. Momo explains that they have to use each other's bodies for seven hours. After school, Rito in Haruna's body gets splattered with mayonnaise when Haruna in Rito's body steps on a bottle of mayonnaise. The real Haruna has to then give her body a shower. However, the timer countdown finishes during this time, leaving Rito touching Haruna. It feels: Celine finds one of Lala's inventions, but because it seems to be broken, Momo lets her play with it. However, it fires a dart that lets Celine massage Tearju Lunatique, causing problems for her as it makes her feel as if someone is playing with her body. When Rito sees Tearju limping, he thinks she might be ill, so offers to take her to the sickroom. Celine uses the machine to violently caress her on the way, making her fall on top of Rito. Yami sees them and thinks that Rito is being "ecchi" to Tearju, so tries to kill him. The device is later revealed to be an invention to massage yourself. Lala gives it to Honekawa because he has terrible back pain.

Girl of Flame Magical Kyouko: Run messages Rito about starring in an upcoming Magical Kyouko episode and wants Rito to watch it. During the taping, Run puts all of her heart into her acting for Rito which causes her costume to fall off. Kirisaki covers up by going ad libitum to Run. After the taping and a few incidents, Kirisaki tells Run that she understands her intent and advises her to concentrate. During broadcasting, Lala enjoys the show while Rito and Momo are shocked to see the principal sneaking onto the set for Run and Kirisaki. Infiltration: Kirisaki arrives at Sainan High School to give a lecture about working as an idol. After the event, Tearju asks Rito to guide Kirisaki around the school which Rito reluctantly agrees to. Rito does not know Kirisaki's main purpose was to observe Rito for a day. As Rito guides Kirisaki through the hallways, he gets unwanted stares from other jealous students. They both come across the principal who initially acts docile but suddenly runs after Kirisaki, making the morals committee discipline him. Afterwards, Morenitsu asks Kirisaki for her autograph and draws the attention of many male students, creating a large crowd around Kirisaki. Rito rescues Kirisaki from suffocation and tries to escape from the other male students. Lala senses danger and uses her invention to teleport them into a locker partly naked. Momo helps recover their clothes, but Kirisaki runs home in embarrassment. The next day, Run tells Kirisaki that she experienced similar events in the past. The memories of Rito carrying Kirisaki come into Kirisaki's mind, but Kirisaki quickly brushes it off. Adhesion: An animal with wriggly arms approaches Mikan and Yami. Yami prepares to attack until Nana identifies the animal as Meda-Q. Meda-Q has interest in Yami and wants to cling to her. As Yami gives in, she shows signs of fear. Later, when Rito brings home taiyaki for Mikan and Meda-Q eats it, Meda-Q goes berserk and quickly overpowers Yami, groping her breasts and removing her panties, molesting her in the process by placing its tentacles on her exposed privates. This subdues Yami, and, as they attempt to help Yami, Mikan and Rito are also caught and firmly held by Meda-Q. Afterwards, everyone question Yami's fear of wriggly animals, but Yami declines to explain. Azenda, who learns about Yami's weakness, tries to exploit it but get instantly defeated by Yami.

Suddenly: Mikan gets a surprise visit from her classmates, Sachie Kogure and Mami Nogiwa, who are interested in meeting her brother Rito. Mikan is not optimistic about their visit given Rito's frequent accidents with him falling over and groping one of the girls. The situation gets worse when Rito and later the Deviluke sisters greets Mikan's classmates, making Mikan panic. Despite a near accident with Rito slipping on a remote control, the day appears to end well with both of them leaving peacefully until Mikan slips on a shoe and fall on top of Rito right when one of her classmates returns to retrieve her manga. Meanwhile, Momo makes a note of Mikan's classmates. Mobile Phone: Rito accidentally steps on his cellphone. He fears he will have to buy another phone but Lala offers to fix Rito's phone. Rito accepts. Lala hands Rito an improved model of his phone and has him try it out on Yui who Rito wanted to call to thank for lending a book to Celine. When Rito calls Yui on his new phone, his voice on the receiving end stimulates Yui's senses, bringing her down to her knees. She feels as if Rito's voice is physically molesting her body. As Rito talks about the book, the stimulation on Yui gets worse eventually making her unresponsive. Rito, clueless about the situation, thinks the phone is still broken. Momo offers Rito to try the phone on her and quickly passes out when she hears Rito's voice, revealing the real problem with Rito's improved phone. Moonlight: On the night of the full moon, Rito panics when he finds a naked girl on the rooftop while watering plants and quickly barges into Mikan. Mikan identifies the girl as Celine in her adult form. Everyone is surprised at Celine's rapid growth given that she did nothing unusual previously. Mikan feels a little sad about losing Celine but Rito assures Mikan that Celine is still present. Wanting to celebrate, Celine asks to sleep with Rito and Mikan for the night. As they all go to bed, Momo, who does not understand Celine's species completely, wonders how the full moon could have affected her growth. The next morning, Celine has reverted to her baby form.