Nisekoi - Season 1 (2014)

Raku's friends come over to his house for a study session. Ruri tries to set up a situation where Raku tutors Kosaki, but Chitoge volunteers. Shu asks if they have kissed yet, so Raku pulls him aside and reveals his situation with Chitoge. Raku's gangster guys trick Raku and Chitoge into being locked in a storage room, where Raku learns that Chitoge has some fears of the dark.

Ruri tries to improve Kosaki's chances with Raku by having Raku and Chitoge teach Kosaki how to swim. Ruri notices that Raku and Chitoge argue more than they seem in love. Raku finds Kosaki's key and tries to use it unlock his pendant but it turns out to be the key to the girls locker room.

Chitoge finds out that Raku was the one who saved her from drowning on the school pool. She tries to thank him, but ends up beating him up more in the process. Chitoge later finds Raku's locket and returns it to him.

Seishirou Tsugumi is introduced as a transfer student. As a former acquaintance of Chitoge, Seishirou finds Raku unfit to be Chitoge's lover. Seishirou challenges Raku to a duel but is inadvertently outplayed. While trying to revive his opponent, Raku learns that Seishirou is not what they seem.

When Raku has to buy pet food, Tsugumi accompanies him to see if he is really fit to be Chitoge's boyfriend. However, Tsugumi is bothered by her developing feelings for Raku, so she seeks advice from her classmates. After being reminded that Chitoge had a first love, Chitoge opens her closet and reads her old diary from ten years ago.

Raku's class has a trip to a hot springs resort. Shu arranges for Raku, Chitoge, Kosaki and Seishirou to ride together. Chitoge recalls the boy from her diary has a scar on his forehead, but is shocked when she sees Raku with a forehead scar. After settling in, the group plans to take a dip at the hot springs. Claude switches the signs for the men's and women's bath to trap Raku into the wrong hot springs.

Continuing on the resort trip, the class holds a test of courage where boys are paired with girls. Raku and Kosaki are luckily paired with each other. Meanwhile, Chitoge trying to understand her feelings for Raku,volunteers to become a ghost in the forest completely forgetting she has a fear of the dark.

When Tsugumi plans a surprise birthday party for Chitoge, and invites Raku and his friends, Ruri makes Kosaki go with Raku to shop for gifts together. Raku finds his time with Kosaki to be fleeting, but Kosaki shows Raku a scenic overlook. When Raku asks Kosaki if she is the promised girl from ten years ago, she answers yes, but they are interrupted by a phone call. At the party, after receiving her friends and family's gifts, Chitoge asks Raku about his feelings for the promised girl and whether he recognizes the phrase "Forever in Love".

Chitoge reveals that she has a key that could unlock Raku's locket, but when they try, the key breaks. While Raku's locket is being repaired, Raku thinks about who might be the one he made a love promise to. Chitoge's father mentions that he recognized Kosaki from the past as the three were friends. Raku's father mentions he has a photo of the girl that Raku made a promise to ten years ago.

While happy that he has a nice picture of Kosaki, Raku struggles with finding the photo of the girl with whom he made a promise. At a study group, he nearly publicizes that he likes Kosaki. After Raku's father tells him the location, Raku discovers that the girl in the photo is someone else, and that she also has a different key. Raku shares his umbrella with Chitoge in the rain, but when the downpour gets heavy, they rest at a shelter and share the photos they ordered. Raku's father tells them that the girl in the photo is coming to school tomorrow and that she is ...

Baffled by the fact that the girl in the photo is Raku's fiance, the aforementioned girl transfers in Raku's class as Marika Tachibana, the daughter of the police chief. She also bears a key that may unlock Raku's locket. Marika and Raku then head on a date, with Kosaki, Ruri, Seishiro and Chitoge spying on them. During their date, Marika bribes Raku into ending his relationship with Chitoge in exchange for answering all his questions regarding the girl and the promise he made ten years ago. Raku refuses, furthermore adding that he has no past memories with Marika, ...

Finally having recognized Marika, the latter fills in Raku about their childhood days and how she mold herself into being Raku's ideal woman then kissing him on the cheek by surprise. With the existence of three keys further shadowing the true identity of the promise girl - in the midst of the confusion - Marika invites Raku to her home to pay respects to her father.

While happy that he has a nice picture of Kosaki, Raku struggles with finding the photo of the girl with whom he made a promise. At a study group, he nearly publicizes that he likes Kosaki. After Raku's father tells him the location, Raku discovers that the girl in the photo is someone else, and that she also has a different key. Raku shares his umbrella with Chitoge in the rain, but when the downpour gets heavy, they rest at a shelter and share the photos they ordered. Raku's father tells them that the girl in the photo is coming to school tomorrow and that she is ...

At a temple festival, Raku works in one of the food stalls being run by his faction's men. After bumping into Chitoge, she had Raku accompany her as a free pass to most of the stalls. When purchasing a relationship charm, Raku gets separated from Chitoge in the crowd and instead stumbles on Kosaki. Afterwards, Raku's relationship charm gets nabbed by a calico cat and Raku chases after it, passing by Marika then Seishirou. Meanwhile, Chitoge finds Raku's charm and returns it to him. Reading a sign regarding the meaning behind relationship charms, Chitoge receives a ...

Raku and the gang go to a beach in the midst of their summer vacation. Chitoge develops romantic feelings for Raku, much to her anxiousness. Kosaki inadvertently asks an asleep Raku of allowing her to kiss him whereas Chitoge mishears it as Kosaki asking for kimchi. While trying to confirm her feelings, Chitoge is approached by Raku and asks him if they would make a functional couple. As a reply, Raku rebukes otherwise, much to Chitoge's heartbreak and causing her to storm off whilst leaving Raku an apology. During their new semester, Raku and Chitoge get nominated ...

Due to Chitoge's refusal of accepting the role in their play, Kosaki steps in and takes the role as Juliet with Raku as Romeo. Whilst in the midst of rehearsals, Raku and Chitoge gets into a heated argument over their fake relationship. As Raku vehemently states how dysfunctional things are between them and is considering to end their ties, Chitoge slaps Raku out of indignation. On the day of their play, Kosaki gets injured after rescuing a fellow classmate from a fall. With no one else to take over Kosaki in her role as Juliet, Raku approaches Chitoge and convinces ...

With Chitoge's inclusion into their cast, the play commences with Shu as the narrator taking their performance into a comedic turn, adding nonsensical subplots into the play's story for the enjoyment of the audience but for the chagrin to some of its casts. Nevertheless, the play finishes, gaining warm admiration from the audience while Chitoge recognizes her true love for Raku. With their usual relationship back in place, Chitoge apologizes to Raku for her harsh behavior and adds that she will still be herself in front of him. During a conversation with Kosaki, Raku ...