Kimi no koto ga Dai Dai Dai Dai Daisuki na 100-nin no Kanojo

Rentarou Aijou has confessed to, and been rejected by, 100 girls in his lifetime. On the last day of Junior High, he visits a shrine and prays that he get a girlfriend during his time at high school. Suddenly, the God of Love appears, and tells Rentarou that the reason for his non-existent love life is because everyone is only supposed to have one soulmate in their life, but due to an error on the God's part, Rentarou is destined to have one hundred.

Sure enough, on the first day of high school, Rentarou meets the wealthy Hakari Hanazono and tsundere Karane Inda. Both girls instantly fall in love with him, and Rentarou is attracted to both of them, but unable to decide between them. That evening, he visits the God of Love again, and is informed that if he does not return the feelings of one of his soulmates, they will die in an accident. Not wanting such a fate to befall Hakari and Karane, Rentarou decides to date both of them at the same time, with their blessing. As the story continues, more girls are introduced, and become Rentarou's girlfriends.

Rentarō Aijō (愛情 連太郎, Aijō Rentarō)

Rentarō has fallen in love and been rejected one hundred times prior to the beginning of the story, thus causing him to strive to better himself each time. Having been overly blessed by a god of a local temple for all of his prayers, by the end of his high school life, Rentarō is destined to have one-hundred girlfriends. When Rentarō makes eye contact with one of his girlfriends for the first time, a shock-like feeling overcomes him and his new girlfriend. Rentarō genuinely loves each and every new girlfriend he meets, even completely passing a lie detector test when questioned about the legitimacy of his feelings. He often goes out of his way, sometimes to extremes, to keep them all happy.

Hakari Hanazono (華園 光, Hanazono Hakari)

Rentarō's first girlfriend. Hakari is from a wealthy family and likes to present a prim and proper appearance, but is rather physical in her affection and can sometimes be perverted. In addition to loving Rentarō, she is somewhat attracted to Karane.

Karane Inda (院田 唐音, Inda Karane)

Rentarō's second girlfriend. Karane has a typical tsundere personality, though not violent by any means. She has difficulty lying and hiding her true feelings. While she initially disliked the idea of Rentarō having multiple girlfriends, she soon became accepting of them. In addition to loving Rentarō, she is somewhat attracted to Hakari.

Shizuka Yoshimoto (好本 静, Yoshimoto Shizuka)

Rentarō's third girlfriend. Shy to the point of muteness, Shizuka was constantly bullied by her fellow students and abused by her mother before meeting Rentarō. She is a bookworm who initially could only communicate through passages of her favorite book by pointing at them when trying to respond to someone. Rentarō develops a speaking app for her so she can freely communicate by digitally reciting the lines she touches. She loves fantasy romance books in particular, but is unable to swim. Her given name literally means "quiet" and her family name literally means "a good book".

Nano Eiai (栄逢 凪乃, Eiai Nano)

Rentarō's fourth girlfriend. Nano is stoic to the point of emotionlessness. She is intelligent and highly optimized in her daily life, removing any sort of unnecessary movements and actions to achieve utter efficiency. She initially has trouble concentrating when she first falls for Rentarō, throwing her lifestyle into chaos, but after going on a date with him and stopping him from burning the photos they took on it, she accepts her feelings and returns to normal. She is afraid of heights. Her family name is a pun on the phrase "is that so?".

Kusuri Yakusen (薬膳 楠莉, Yakusen Kusuri)

Rentarō's fifth girlfriend. Kusuri is a scientist who specialises in creating drugs which have strange side effects when consumed. She is eighteen years old, but due to having consumed a drug that was supposed to make her immortal, she spends much of her time in an eight-year-old body but can temporarily revert to her true eighteen year old body through the use of her drugs. She acts like her general appearance, talks in the third-person, and ends her sentences with nano (なの). Her name is a pun on the word for medicine and drugs with her family name having the kanji for it (薬) and her given name being the direct pronunciation.

Hahari Hanazono (花園 羽々里, Hanazono Hahari)

Rentarō's sixth girlfriend and Hakari's mother. She gave birth to Hakari when she was thirteen, due to having fallen in love with a terminally ill fellow student. Knowing that he did not have long to live, she had herself artificially inseminated with his sperm so that they could be a family before he died. Initially, she disapproved of Hakari's relationship with Rentarō, believing that he was two-timing her daughter with four other girls, but changed her mind when she fell in love with Rentarō herself, going as far as buying the school and becoming the new chairwoman in order to stay close to him. She adores cute things and shares some of her daughter's perverted tendencies. She can also be overbearingly affectionate to Rentarō and his girlfriends, usually trying to be the mother figure to them all. Her given name is a pun on the Japanese word for mother (母).

Kurumi Haraga (原賀 胡桃, Haraga Kurumi)

Rentarō's seventh girlfriend. Kurumi is a middle-schooler with a very high metabolism, which causes her to get hungry very easily - even hearing a word that sounds similar to a certain type of food will cause her to crave that food. As a result, she constantly wears headphones and has her hood up in order to block out as much food-related talk as possible. She has two personalities, depending on whether or not she is hungry. When she has eaten, she is a very kind and sweet-natured person, but when she is hungry, she is short-tempered and abrupt - unfortunately, due to being near constantly hungry, she is near constantly short-tempered.

Mei Meido (銘戸 芽衣, Meido Mei)

Rentarō's eighth girlfriend. Mei is the Hanazono family maid, and will meekly accept any order she is given, no matter how bad or absurd it is. She has rainbow-coloured eyes which are near constantly closed, although this does not stop her from being able to drive a car or fly a helicopter. A bonus story in the fourth volume reveals that her attitude stems from being abused by her parents, who abandoned her after destroying her self-esteem to the point where she no longer felt her life was worth anything. Wandering in the snow, she was found by Hahari, who offered to adopt her into the Hanazono family. She turned the offer down, but happily agreed to become a maid. Her family name is a pun on the word "Maid".

Iku Sutō (須藤 育, Sutō Iku)

Rentarō's ninth girlfriend. Iku is the only member of the school baseball team as the other members decided to study baseball in America. She is masochistic, finding pleasure in overworking herself to exhaustion and otherwise being mildly hurt. Even being "heartbroken" by Rentarō causes her great pleasure, though she becomes a legitimate girlfriend for Rentarō.

Mimimi Utsukushisugi (美杉 美々美, Utsukushisugi Mimimi)

Rentarō's tenth girlfriend. Mimimi is a vain girl who is obsessed with beauty, but is aware that beauty cannot simply be bought, and considers inner beauty just as important as outer beauty. As such, she puts a lot of work into making herself beautiful, earning her own money, cutting costs wherever she can, doing facial regimens, and teaching herself elocution. She initially considers Nano her rival in beauty, due to Nano having beaten her in their junior high school beauty contest. It is later revealed that her hatred actually stems from Nano having snubbed her after the contest, and she decides to let bygones be bygones when Nano apologises to her, although she insists on maintaining a friendly rivalry. Her name contains the kanji for beautiful (美) three times.

Meme Kakure (華暮 愛々, Kakure Meme)

Rentarō's eleventh girlfriend. Meme is a shrinking violet girl who goes out of her way to be a "background character". She has a pronounced figure that she actively binds down to reduce attention to her and her most prominent physical characteristic is her bangs that constantly cover her eyes except when Rentaro saves her from a flying sign in a windstorm that nearly strikes her. Despite making eye contact with Rentarō, her eyes are still obscured by the sound effects on the page. When pressured or embarrassed, she suddenly vanishes, leaving behind a cute, small plush animal that she knits herself as a means of misdirection so she can escape her situation. Her family name, Kakure, is a pun on the Japanese word "to hide" (隠れ).

Kimi no koto ga Dai Dai Dai Dai Daisuki na 100-nin no Kanojo is written by Rikito Nakamura and illustrated by Yukiko Nozawa. It has been serialized in Shueisha's Weekly Young Jump since December 26, 2019.[3] Shueisha has collected its chapters into individual tankōbon volumes. The first volume was released on April 17, 2020.[4] As of December 18, 2020, four volumes have been released.[5]

In 2020, the manga ranked 2nd on the 6th Tsugi ni Kuru Manga Taishō Award out of the 50 nominees with 19,902 votes.[8][9]

• Official website at Weekly Young Jump (in Japanese)