History Trivia / RentAGirlfriend

*** By the time of the second season's premiere, Kazuya's regular voice actor, Creator/AleksLe, was infected with COVID-19, so Creator/AlejandroSaab voiced Kazuya in Episode 14.
* PlayingAgainstType: In the Japanese version, Creator/RyuseiNakao, whose most famous role is the cruel galactic overlord Frieza from the ''Franchise/DragonBall'' franchise and who is renown for mainly voicing villainous characters, gets to voice Chizuru's kind, supportive, and excitable grandfather in the second season's final episode, a far cry from the roles he's usually cast in.

* ActingForTwo: In the English dub
** Creator/ColleenOShaughnessey voices both Sayuri Ichinose and Harumi Kinoshita.

*** By the time of the second season's premiere, Kazuya's regular voice actor Creator/AleksLe was infected with COVID-19, so Creator/AlejandroSaab briefly voiced Kazuya for the first three episodes.

*** By the time of the second season's premiere, Kazuya's regular voice actor Creator/AleksLe was infected with COVID-19. so Creator/AlejandroSaab briefly voiced Kazuya for the first three episodes.

** Creator/LandonMcConald voices Shun "Kuri" Kuribayashi and Katsuhito Ichinose.

* ActingForTwo: In the English dub, Creator/ColleenOShaughnessey voices both Sayuri Ichinose and Harumi Kinoshita.

*** By the time of the second season's premiere, Kazuya's regular voice actor Creator/AleksLe was briefly infected with COVID-19. so Creator/AlejandroSaab briefly voiced Kazuya for the first three episodes.

* InspirationForTheWork: Miyajima got the inspiration to create the manga after reading an online article about Chinese men hiring rental girlfriends to impress their parents during the Lunar New Year holidays, [[https://kodansha.us/2020/06/03/creator-interview-reiji-miyajima-on-rent-a-girlfriend/ according to an interview by the manga's English publisher Kodansha USA]]. He even hired a rental girlfriend in order to immerse himself into the experience.
* NewbieBoom: Two years after the series began, by November 2019, the manga had sold 2.5 million copies in Japan. Following the announcement of the anime a month later, sales continued to grow and eventually surpassed the 4 million mark in June 2020. Within a month of the anime airing, the series surpassed the 5 million mark in August 2020, which Miyajima celebrated on [[https://twitter.com/Miyajimareiji/status/1292675331095060481 his Twitter account]]. Overseas, the anime brought in a [[JustForPun wave of new fans]], and following the end of the first season, many jumped ship to the manga to see what would happen next.

* YouSoundFamiliar: IMami's anime voice actress, Aoi Yūki, previously played Chizuru in the 2018 commercial.

*** Chizuru Mizuhara was voiced for the 2018 commercial by Aoi Yūki, who would later voice Mami in the series proper.

* YouSoundFamiliar: In the anime, Mami is voiced by Aoi Yūki, who previously played Chizuru in the 2018 commercial.

*** Chizuru Mizuhara was voiced in a 2018 commercial by Aoi Yūki, who would later voice Mami in the series proper.

*** Creator/AlejandroSaab voiced Kazuya in the first couple of episodes of Season 2 when Creator/AleksLe was bedridden with COVID-19.
* PlayingAgainstType: In the Japanese version, Creator/RyuseiNakao, whose most famous role is the cruel galactic overlord [[Franchise/DragonBall Frieza]] and who is renown for mainly voicing villainous characters, gets to voice Chizuru's kind, supportive, and excitable grandfather in the last episode of the second season of the anime, a far cry from the roles he's usually cast in.

* YouSoundFamiliar: In the anime, Mami is voiced by Aoi Yūki, who previously played Chizuru in a 2018 commercial.

*** Creator/AlejandroSaab briefly voiced Kazuya in the second season's first three episodes when Creator/AleksLe was bedridden with COVID-19.

*** Creator/AleksLe announced he didn't voice Kazuya in the first couple episodes of Season 2 (episodes 13-15) because he was bedridden with COVID and couldn't speak. As a result, Creator/AlejandroSaab filled in for Le.

* RelationshipVoiceActor:
** In the 2017 commercial, [[Creator/JunFukushima Kazuya]] and [[Creator/SoraAmamiya Chizuru]] are [[LightNovel/KonoSuba Kazuma and Aqua]]. In the anime, Chizuru [[TheOriginalDarrin reprised her role]] as Aqua, and [[Creator/RieTakahashi Sumi]] is Megumin.
** English dub:
*** [[Creator/SuzieYeung Sumi]] and [[Creator/AleksLe Kazuya]] are [[VideoGame/FinalFantasyVIIRemake Yuffie and Sonon]].
*** [[Creator/SuzieYeung Sumi]], [[Creator/LizzieFreeman Chizuru]], and [[Creator/LauraStahl Mami]] are [[Videogame/GenshinImpact Eula, Yanfei, Barbara and Xinyan]].

** Kazuya Kinoshita was voiced by three different voice actors: Creator/JunFukushima (2017 commercial), Creator/HarukiIshiya (2018 commercial) and Creator/ShunHorie (2020 anime).
** Chizuru Mizuhara was voiced in a 2018 commercial by Aoi Yūki, who would later voice Mami in the series proper.
** Aleks Le announced he didn't voice Kazuya in the first couple episodes of the second seasons (episodes 13-15) because he was bedridden with Covid and couldn't speak. Alejandro Saab took over in the meantime.

* PlayingAgainstType: In the Japanese version, Creator/RyuseiNakao, whose most famous role is the cruel galactic overlord [[Franchise/DragonBall Frieza]] and who is reknown for mainly voicing villainous characters, gets to voice Chizuru's kind, supportive and excitable grandfather in the last episode of the second season of the anime, a far cry from the roles he's usually cast in.

* PlayingAgainstType: Creator/RyuseiNakao, whose most famous role is the cruel galactic overlord [[Franchise/DragonBall Frieza]] and who is reknown for mainly voicing villainous characters, gets to voice Chizuru's kind, supportive and excitable grandfather in the last episode of the second season of the anime, a far cry from the roles he's usually casted for.

* WhatCouldHaveBeen: Miyajima has said in interviews that Mami was originally intended to be a one-off character who would never be seen after the first chapter, but changed his mind when he wondered what kind of background such a character would have.

* DawsonCasting: Ruka's live-action actress Mio Kudo was 22 years old when she played the character.

* TheOriginalDarrin: After being replaced by Creator/AoiYuuki for a 2018 commercial, Creator/SoraAmamiya returns to voice Chizuru Mizuhara for the 2020 anime.

** In the 2017 commercial, [[Creator/JunFukushima Kazuya]] and [[Creator/SoraAmamiya Chizuru]] are [[LightNovel/KonoSuba Kazuma and Aqua]]. In the anime, Chizuru [[TheOriginalDarrin reprises her role]] as Aqua, and [[Creator/RieTakahashi Sumi]] is Megumin.
** In English, [[Creator/SuzieYeung Sumi]] and [[Creator/AleksLe Kazuya]] are [[VideoGame/FinalFantasyVIIRemake Yuffie and Sonon]].
** Also in the dub [[Creator/SuzieYeung Sumi]], [[Creator/LizzieFreeman Chizuru]], and [[Creator/LauraStahl Mami]] are [[Videogame/GenshinImpact Eula, Yanfei, Barbara and Xinyan]].

* UnderageCasting: Oideyasu Oda and Kaoru Noguchi were 43 and 46, respectively, when they portrayed Kazuo and Harumi Kinoshita in the live-action adaptation.

* UnderageCasting: Oideyasu Oda was 43 years old when he portrayed the 55-year-old Kazuo Kinoshita in the live-action adaptation.

* UnderageCasting: Oideyasu Oda was 43 years old when he portrayed Kazuo Kinoshita in the live-action adaptation.

* {{Blooper}}: The first magazine release of chapter 240 mistakenly labeled it as “The Girlfriend and the Kiss, Part 9” when it’s actually part one of “The Girlfriend and the Investigation” arc.

* FanNickname:
** Kazuya is sometimes called "[[MemeticBadass Chad]]zuya", specifically during his more impressive moments that defy his usual MemeticLoser status. The name is also used to refer to the handsome face shown in his ImagineSpot of confessing to Chizuru in a manly way in Chapter 170.
** Chizuru is commonly referred to as "Chorizo".

** Chizuru is commonly referred to as Chorizo.

* FanNickname: Kazuya is sometimes called "[[MemeticBadass Chad]]zuya", specifically during his more impressive moments that defy his usual MemeticLoser status. The name is also used to refer to the handsome face shown in his ImagineSpot of confessing to Chizuru in a manly way in Chapter 170.