Hilarious In Hindsight / hololive

• In mid 2020, Subaru on a collab stream made a controversial opinion that spending money on gacha games is a somewhat pointless endeavor since it's "just a card," much to the ire of Fubuki and Suisei, the two most notorious gacha "whales" from the JP branch. Come January 2021, Subaru makes an in-app purchase on Granblue Fantasy while completely in denial about what she had just done.
• In the 2020 rendition of hololive Japan's cover of "Ochame Kinou"/"Fukiretta" by LamazeP, Marine's turn has her say "Oh my God!" in a similar manner to Old Man Joseph Joestar. Come January 2021, Marine made a cover of "BLOODY STREAM", the OP of the Part 2 of the JoJo's Bizarre Adventure anime series where Joseph is also the main protagonist of.
• In June of 2019, Haato covered the Vocaloid song "ECHO". Since 2020, the lyrics of the song have been seen by many as startlingly appropriate for the "Haachama taking over Akai Haato" narrative/meme. Come the Haato/Haachama split personality character arc in February 2021, where now the lyrics almost perfectly describe the things Haato is going through; so well that it could be seen as a song that was designed to tie in to said arc, despite being created almost a year before the existence of Haachama as a persona.

  ECHO lyrics: What the hell's going on?! / Can someone tell me please? / Why I'm switching faster than the channels on TV. / I'm BLACK then I'm WHITE no!!! / Something isn't right!! / My enemy's invisible, I don't know how to fight. / The trembling fear is, more than I can take, when I'm up against, echo in the mirror. / ECHO...

• Fubuki at one point gives a very passionate speech about glasses at an absurd speed, exclaiming that everyone in Hololive should have them. Come the tail end of 2020 and mid 2021, where new outfits for many girls in the Japanese branch have glasses as an equippable accessory.
• Fan artist AliceMagic created a cartoon where a giant Gura and Ina attacked a ship carrying Marine and Aqua.. Three months after this dropped, Hololive formed UMISEA, a collab group with the four water-themed members. Along with this came a cartoon that has a giant Gura and Ina attack a ship carrying Marine and Aqua.
• Prior to her debut, Baelz' habit of typing her words upside-down led to some predictable jokes about her being "Australian", which became all the more amusing when her streams began and it was discovered that she really is Australian.
• Several fans joked that the Tsundere Haato becoming the chaotic Haachama was simply a natural effect that Australia had on people. Cue Baelz, an Australian, canonically being the very concept of Chaos.
• After all but confirming that she was Austrian, Kiara has jokingly referred to herself as being Austrailian. Cue Council having not one, but two actual Australians in it (i.e. Baelz and Sana).
• Although made by Ame as a throwaway gag answer in a group Jackbox stream, lo and behold, holoX. Fans are still not sure whether it was sheer coincidence, or if Ame was throwing out spoilers due to her time traveling abilities.
• Vergil's katana, Yamato, has its name written as 閻魔刀 in Japanese. 閻魔 ("Enma") is the Japanese name of the Buddhist god of the dead, Yama. The weapon's etymology is even acknowledged In-Universe in Devil May Cry 5 under "The Legend of Sparda" library file; the Yamato was a devil sword of Sparda and is intentionally named to "embody a god of death". Ina's stream manager, ENMa-chan (an abbreviation of "English Manager"), not only happens to have the same name as this god of the dead, but she became famous for killing a Tank in Left 4 Dead 2 with a katana, and is therefore commonly depicted as a katana-wielder. Devil May Cry fans who are also into hololive found it interesting that there are now at least two characters who associate the god Enma with a katana, and thus compare ENMa-chan with Vergil.
  • Speaking of Vergil, Gura played through Devil May Cry 5 throughout most of April 2021. Vergil, the final boss, is introduced with the Boss Subtitle "The Alpha and the Omega". Four months after the end of that playthrough, hololive EN Council dropped a surprise reveal for hololive EN's general manager, Omegaα. At least one piece of fan art lampshaded the coincidence by drawing them doing Vergil's Face-Revealing Turn, and Gura herself doesn't take it too well when one of her chat members speculates that they might be Vergil's VTuber persona.
• Whenever she engages in a no loan word challenge in Mario Kart 8 DX streams, Suisei speaks like a samurai to avoid them and she's done it enough that she is called Bushimachi when it comes up. In one particular tournament, she did it on the Hoshiyomis' urging and got her teammates (including Fubuki, Noel and Watame) to join in. Then in late 2021, hololive would introduce Iroha Kazama, an actual samurai girl for Gen. 6, and she also happens to be a Hoshiyomi.
• Coco's original song is titled "Good Morning WEATHER HACKERS!", with "Weather Hacker" being a non-explicit stand-in for the word "Motherfucker". Fast-forward nine months to late March of 2022 with the announcement and debut of Hololive Indonesia's 3rd-gen, and we have ourselves an actual "Weather Hacker", in the form of Kobo Kanaeru, a rain shaman.
• This fanart involving a mass costume swap between each of the members of HoloMyth was posted on April Fools' Day of 2021. Exactly one year later, Gura's April Fools' stream would have have each of the Myth members using fan-made models of the swapped outfits.
• Gigguk once stated "VTubers is just wrestling with waifus", comparing the Kayfabe involved in the community to that used in Professional Wrestling. Then, this comparison comes full circle when Miko and Gura started playing around with WWE 2K22, creating wrestlers based off themselves and their peers.
• Referring to Miko as "Elite" was an ironic running joke in the fanbase for a long time, but it became especially ironic due to her hololive ERROR character/counterpart Sakura Shinomiya, a shrine maiden that becomes extremely ultra-competent later in the series, even if not solely as a shrine maiden. Or, in other words, Sakura is an unironically elite miko.
• Anya's second outfit was memed to death due to the rigging making it look like she was wearing a mask of her own face. A year later, her third outfit was revealed to include a Post-Apocalyptic Gas Mask.
• Kiara's first stream after returning from her channel termination (which was explained in-universe as her having had to reincarnate and losing her memories as a result) has her redo her original debut in German as a member of the fictional "Hololive Germany" branch. About a year and a half later, she actually did a German debut.
• Gura's "k" rant during a Minecraft stream turned out to be true when Mumei replied with "K" in response to Kronii's tweet on the owl's "DILEMMA" cover.
• On January 4, 2021, Kiara did a short meme video titled "am frog". Fast forward to the road to Halloween 2022, and "Frogiwawa" finally starts taking over Kiara's channel.
• Prior to his debut, Altare's debut manga revealed TEMPUS is missing a fifth member, who was seemingly wiped from time and space somehow; it also happens to share the spotlight with Omegaα as they cradle the same model of gun Altare carries. Then comes October 2022 and quite the handful of jokes about how Kronii — who, you guessed it, is also connected to Omegaα and is involved in time — is basically one of TEMPUS's own because of how well she interacts with them in group collabs.
• The speech at the end of Kronii's cover of "Mafia" ends with "...this world is beyond salvation." However, after a stream which she blends Subway sandwiches to create Subway smoothies, Calli declared that Kronii was the one who was beyond salvation.
• During the earliest days of hololive when Sora was its sole talent, her earliest stream featured a segment where her character model was superimposed over a background image of Easter island and several Moai heads. Come 2023, the fandom is graced with the debut of Koseki Bijou, who also prominently uses the Moai as part of her visual identity. Cue the flood of jokes from long-time fans about YAGOO having the godly foresight to foreshadow one of his later idols six years in advance, or that Bijou's first ever collab was with the Goddess of hololive herself. And this isn't even including the many throwaway gags in HoloGra where a Moai is present...
• In late December of 2022, YAGOO started watching Bocchi the Rock! and expressed his approval of it on Twitter. Fast forward about nine months to September 2023, and many fans couldn't help but find the designs of many ReGLOSS members suspiciously familiar, with Aqua being the stand-in for the protagonist given their similar personalities and color scheme.
• After Juufuutei Raden's debut, where she's revealed to be a chainsmoker with a laughter that's disturbingly similar to Pekora's, many viewers were left wondering if Korone was actually onto something when she did an impression of the rabbit girl buying cigarettes in early 2023. This became even funnier when Raden elaborated that the brand of cigarettes she used to smoke actually was the same type Korone mentioned while in-character as Pekora.
  • Further playing into this, Raden's voice has been described as a mix of Pekora's and Marine's, with her inheriting the Signature Laugh of the former and the nasal high pitch of the latter. Three guesses who ended up voicing their "daughter" Makora for Pekora's birthday in January 2024, and the first two don't count.
• Older fans/those familiar with Gigantor may giggle at seeing a Really 700 Years Old blue-haired character (who has a Greek-inspired outfit) named Gura, because, well...
• Long-time fans of Marine will remember the 2020 animated short of her fishing Gura up from the ocean before unsettling the shark with her extreme libido. The MV of SHINKIRO is considered by many to be the follow-up and logical conclusion to that short.
• One of the running gags with Bae is saying that she's actually a member of the Japanese branch due to her fluency in the language and occasional habit of defaulting to Japanese when certain English words evade her. Cue early 2024 where Bae actually ends up moving to Japan.
• All the way back in late 2020, one of Coco's superchats made a joke comment pretending to be a time traveler who came back to the past to congratulate her for landing a role in Like a Dragon 8. In the interest of maintaining the Open Secret, let's just say she's managed to achieve just that in 2024 with the release of Like a Dragon: Infinite Wealth. This got a chuckle out of many former Tatsunokos, who treat it as some sort of predestination paradox, or that time traveling is definitely real and/or Ame's up to her usual antics again. Making this even more hilarious was Coco's off-handed joke about it being nice to have a dragon as a hostess in a Like a Dragon title. Said series' Gaiden Game, Like a Dragon Gaiden: The Man Who Erased His Name, which released a few months prior to 8/Infinite Wealth, ended up making that a reality as well.