History Manga / GirlfriendGirlfriend

* SpiritualAntithesis: To a manga that started getting serialized right alongside it, ''Manga/The100GirlfriendsWhoReallyReallyReallyReallyReallyLoveYou''. Both are wacky gag-based harem romantic comedy manga, both have devoted and straightforward male leads, both have everyone admit that what they're doing would be considered cheating in any other relationship, and both have the girls try to make the relationship work as the harem grows. However, there are key differences; while the attraction is supernatural in 100 Kanojo, everyone is genuinely in love and they are willing to make friends with the rest of the harem, eventually piling up into a family dynamic. Rentarou also has energy to spare so his girlfriends never have to feel like they're left out of the loop. In contrast, Kanojo Mo Kanojo has the love happen naturally, but it focuses on the problems with a harem; that the girlfriends he has do in fact want to monopolize their man's attention even if they like the other girls, and explores what happens if a haremette wants him all to herself or when he can't keep up with their needs and his own selfishness. The harem is also much smaller and he only intends on dating two of them.

''Girlfriend, Girlfriend'' (or ''Kanojo Mo Kanojo'' in Japanese) is an ongoing RomCom manga created by Hiroyuki (''Manga/AhoGirl'', ''Manga/TheComicArtistAndHisAssistants'', ''Manga/DoujinWork''). It began serialization in ''[[Magazine/ShonenMagazine Weekly Shonen Magazine]]'' in March of 2020. In July of 2021 an Anime Adaptation began airing produced by Tezuka Productions.

* DeconstructiveParody: Naoya's [[HaremGenre harem situation]] may seem like a dream come true, but there are multiple instances where it's made clear that the girls are either putting up with the harem for the time being or are outright bothered by it. Both Saki and Nagisa don't like the idea of sharing their "firsts" with the other girl, such as with kisses or dating, and Saki especially feels left out at times and is always shown resenting the fact that Naoya openly two-timed her. At the same time, Naoya is determined to make both girls happy even with all those difficulties. It's just that his methods to achieve that tend to make a mockery of a little thing called "common sense". And above that, every person who eventually learns about the poly relationship never think of Naoya as lucky or the girls as sweet--they think everyone involved is an idiot, Naoya for two timing, the girls for ''letting'' him, and any hopefuls idiots for falling for a known two-timer.

** Nagisa when it came to getting herself prepared to confess to Naoya trained her body and spirit in a TrainingFromHell type regiment while also teaching herself how to be a 5 star chief. Though the downside of this was she neglected school for several months and as such is a complete idiot when it comes to school work.

** Saki is actually usually more of an ExtremeDoormat, at least when compared to the obsessive determination of the the others, but it's shown in the past she can be just as determined as Naoya when it comes to something she wants. In the past it was becoming friends with Shino, and no matter how much Shino said no, Saki was not going to be deterred.

* MeetTheInLaws: Naoya's mother and father finally come home after being away from their house for so long, allowing them to come face to face with the two timing relationship and the extra girls staying in their home. Predictably, they're both angry with the relationship...but the father is simply jealous of the situation, while the mother points out that it can't last forever on empty promises and the girls' good will. Ultimately they're okay with him dating Saki and Nagisa, but they haven't even considered Mirika and Shino as official girlfriends (yet).

* SurprisinglyRealisticOutcome: One of Saki's biggest issues with the two-timing is how she will be perceived by society. She agonizes about this for sometime until she finally can't handle the secrecy anymore and confesses to the entire class, only to be quickly told that nobody cares about what they do with their love life as long as Saki is okay with it, which she had said she more or less was.
** Naoya gets a part-time job at a convenience store to help pay expenses, and Rika sees this as an opportunity to get close to him and harrass him because he cannot leave the store due to his job. He calls the cops and she gets banned from the store.
** As Rika learn the hard way by Shino, that Video Game Streamers don't make that much to make a living. Especially that their career depends on their popularity and not to mention taxes will remove a major part of their income.

* DeconstructiveParody: Naoya's harem situation may seem like a dream come true, but there are multiple instances where it's made clear that the girls are either putting up with the harem for the time being or are outright bothered by it. Both Saki and Nagisa don't like the idea of sharing their "firsts" with the other girl, such as with kisses or dating, and Saki especially feels left out at times and is always shown resenting the fact that Naoya openly two-timed her. At the same time, Naoya is determined to make both girls happy even with all those difficulties. It's just that his methods to achieve that tend to make a mockery of a little thing called "common sense". And above that, every person who eventually learns about the poly relationship never think of Naoya as lucky or the girls as sweet--they think everyone involved is an idiot, Naoya for two timing, the girls for ''letting'' him, and any hopefuls idiots for falling for a known two-timer.

* {{Polyamory}}: The story is about Naoya basically starting a polyamorous relationship with Saki Saki and Nagisa Minase. Since he doesn't want to hurt either girl, he figures the perfect "solution" is to make both girls happy by dating both of them at the same time. It's implied that Mirika and Shino will ''also'' join the arrangement at some point, though until then Mirika is primarily aiming to steal Naoya away from all of them to have him to herself, and Shino is driven by IWantMyBelovedToBeHappy to end the polyamory so he'll only be with Saki, [[spoiler:until she finally confesses her feelings and decides she wants to be part of the relationship herself]].

* DesertedIsland: Naoya and Shino get washed out to sea and stranded on one during their trip to Okinawa.

* SurprisinglyRealisticOutcome: One of Saki's biggest issues with the two-timing is how she will be perceived by society. She agonizes about this for sometime until she finally can't handle the secrecy anymore and confesses to the entire class, only to be quickly told that nobody cares about what they do with their love life.

''Girlfriend, Girlfriend'' (or ''Kanojo Mo Kanojo'' in Japanese) is a currently ongoing RomCom manga created by Hiroyuki (''Manga/AhoGirl'', ''Manga/TheComicArtistAndHisAssistants'', ''Manga/DoujinWork''). It began serialization in ''[[Magazine/ShonenMagazine Weekly Shonen Magazine]]'' in March of 2020. In July of 2021 an Anime Adaptation began airing produced by Tezuka Productions.

* {{Polyamory}}: The story is about Naoya basically starting a polyamorous relationship with Saki Saki and Nagisa Minase. Since he doesn't want to hurt either girl, he figures the perfect "solution" is to make both girls happy by dating both of them at the same time. It's implied that Mirika and Shino will ''also'' join the arrangement at some point.

* CantHoldHisLiquor: None of the girls can do so. They're once given a crate of alcoholic chocolates (barely 3% alcoholic content) from Saki's mother, and it only takes them a few boxes for them to get completely sloshed. Naoya only gets a handful shoved down his throat and he wakes up from a drunken blackout.

* {{Polyamory}}: The story is about Naoya basically starting a polyamorous relationship with Saki Saki and Nagisa Minase, since he doesn't want to hurt either girl and he figures the perfect "solution" is to make both girls happy by dating both of them at the same time. It's implied that Mirika and Shino will ''also'' join the arrangement at some point.

* BleepDammit: In a series where sexual references are abundant, it doesn't take much effort to understand that Naoya is saying "threesome" (with the "some" part [[SoundEffectBleep blocked out by the sound of steam from a boiling kettle]]) when he announces his intent to abstain from getting into one with Saki and Nagisa.

* BeachEpisode: One arc involves the cast going to Okinawa, where Naoya and Shino get swept out to see and [[spoiler: Shino kisses Naoya]].
* BlandNameProduct: Rika makes videos for "[=MeTube=]".