History Funny / GrandBlue

** Whenever anybody tries (and succeeds) to set "oolong tea" or "water" on fire

* The contest goes on until both Iori and Kouhei wasted from drinking too much. Kotobuki then offered both of them (what is seemingly) water as a refreshment, only for them to realized what Kotobuki just offered is Spirytus with 96% alcohol when they already chug the water down. Cue the hilarious reaction from both Iori and Kouhei while shouting "THIS ISN'T WATER!!"

* Iori and Kouhei competing/sabotaging each other in order to be the one that will not joining the Diving club.

* In the first contest, Kouhei win the 1st round by telling Iori that [[CaptainObvious While he's not looking like one, he's actually an otaku.]]

* Iori and Kouhei competing/sabotaging each other to be the one that will not joining the Diving club.

** proceeded by Tokita and Kotobuki offering Iori a "water", Iori then trying to put a fire on it and it lights up.

** Iori complaining that the "Oolong Tea" is different from the one he knows of, His Seniors then replying that the drink have a same color and can be lit on fire. In which retorted by Iori that the fact it can be ignited means it ismostly alcohol.

* To help Iori convince Nanaka that he is responsible enough to go to a mixer, Tokita and Kotobuki help Iori decorate his room in a fashion befitting an "independent adult".

* For the sake of earning clothes from Kotobuki, Iori lure/trap Kouhei into joining the diving club by sweet talking him that in the university might exist a club full of high school girl that will fall head over heels on Kouhei and became his harem. (which is obviously did not exist.)

* For the sake of earning clothes from Kotobuki, Iori lure/trap Kouhei into joining the diving club by sweet talking him that in the university might exist a club full of high school girl that will became Kouhei's harem. (which is obviously did not exist.)

* For the sake of earning clothes, Iori lure/trap Kouhei into the diving club by sweet talking him that in the university might exist a club full of high school girl that will became Kouhei's harem. (which is obviously did not exist.)

Grand Blue features alcohol, idiots, and alcohol-fueled idiocy. Naturally it is the perfect environment for wacky hijinks and bad people being bad to each other, starting from the [[EstablishingSeriesMoment page image]] and only getting crazier from there

* Chapters 1 & 2/Episode 1
** Ready to begin college, Iori Kitahara throws open the doors to the "Grand Blue" diving shop, and is greeted by naked men playing drinking games

** Iori tries to escape, but is [[JustForPun manhandled]] by Tokita and Kotobuki back to the shop

** When pressured to engage with the drunken antics of the divers, Iori vehemently declines. One GilliganCut later, and Iori is also stripped down to his boxers and filled with booze, [[OhCrap just in time to meet his cousin Chisa]].

** Iori tries to avoid the afterparty to make it to his university orientation on time, but Tokita and Kotobuki both assure him that he'll be on time with their help. He does make it, [[BeCarefulWhatYouWishFor waking up outside the lecture hall in his boxers surrounded by onlookers]]

** Iori realises he doesn't know the way home, and tries to get Chisa to lend him her clothes, earning him a trip with the nice men in blue. Later he tries to get Kouhei to do the same, ending in the same way.

* Chapters 3 & 4/Episode 2
** Iori goes home and greeted by his senpais and uncle in naked aprons.

** Nanaka reveals that Iori has not been home for 3 days straight, and doesn't even know where his room is!

** To help Iori convince Nanaka that he is responsible enough to go to a mixer, Tokita and Kotobuki help Iori decorate his room in a fashion befitting an "independent adult".
*** Iteration 1: Adult videos, books and posters

*** Iteration 2: Anime merchandise (by Kouhei)

*** Iteration 3: BL/yaoi books, posters and videos (again by Kouhei)

*** Iteration 4: Chisa's face plastered over anime merchandise

*** Chisa enters the room and beholds the StalkerShrine, resulting in Iori's relocation to a dingy and unused room somewhere else in the house. [[labelnote:*]]Chapter 22 reveals that Nanaka's room is essentially identical to Iori's 4th iteration![[/labelnote]]

*** When Iori (unaware of the decorations) shows his room to Nanaka, awkwardness ensues.
*** Tokita and Kotobuki offer an enraged Iori an AV as a welcoming gift. They view it together when Chisa arrives with a used shelf (a gift). Chisa drives the shelf into Iori's head when he invites her to join them in the viewing.
*** Iori is convinced to let his sempais continue helping after being offered another AV, requesting a freshman's room

*** Iori beholds the decorations, and immediately destroys one of the wall posters, earning Kouhei's curses upon his descendants for ruining his "Otaku living-alone starter set"
*** Kouhei was baited into helping with a (nonexistent) AV of middle-school girls by Tokita and Kotobuki
*** Iori (enraged again) declares that he wants the "opposite" of the current "otaku" room, which is rapidly misintepreted by Kouhei, leading to.....

*** Kouhei gave Iori the [[ExactWords opposite]] of his otaku merchandise (which displayed female characters), turning his room into a yaoi paradise.
*** Nanaka arrives to help with the decoration and Iori tries to convince her to leave. Audio from a yaoi AV (heard through the door) confuses Nanaka about Iori's orientation, prompting another awkward misunderstanding
*** Iori goes "super saiyan" with determination to appeal to Nanaka's siscon tendencies, resulting in.....

*** [[EveryoneHasStandards Even Kouhei and the two sempais are creeped out about this iteration's stalker-ish nature.]]
*** Tokita reveals that the mixer was cancelled, [[AllForNothing rendering all of Iori's efforts naught.]]
*** Chisa enters the room and beholds the StalkerShrine, resulting in Iori's relocation to a dingy and unused room somewhere else in the house. [[labelnote:*]]Chapter 22 reveals that Nanaka's room is essentially identical to Iori's 4th iteration![[/labelnote]]

** Iori tries to escape, but is [[JustForPun manhandled]] by Kouhei and Ryuuji back to the shop

** Iori tries to avoid the afterparty to make it to his university orientation on time, but Ryuuji and Kouhei both assure him that he'll be on time with their help. He does make it, [[BeCarefulWhatYouWishFor waking up outside the lecture hall in his boxers surrounded by onlookers]]

** Iori goes home and greeted by his senpais and uncle in... naked apron.

** Nanaka revealed that Iori have been straight up 3 days staying over from the house since his arrival... Even worse, he doesn't even know where his room is.

** for the sake of making Nanaka approving him to go into a mix-up party with Oumi Women University, Iori determined to convince Nanaka by tidying up his room into "independent adult" like with the help of Tokita and Kotobuki (in which joined by Kouhei later.) The whole tidying up room scenes is hilariously priceless, with each alteration of Iori's room is absurdly worse than the latter.
*** first, Tokita and Kotobuki decorating the room by lining up the whole room with Adult Videos, books and posters plastered all over the walls. (In which making the whole situation super awkward for Iori that taking Nanaka to show how he have tidying up his room as an adult man.)
*** as Iori enraged at his senpais arrangement, Tokita and Kotobuki offering to give him one of the Adult video as a welcoming gift (in which making Iori selecting the video by watching it.) unfortunately at the time Iori is watching the video, Chisa come to his room to offer him her used shelf. Later, the furniture is showed to be busted into Iori's head because of him inviting Chisa to watch the adult video together.
*** Iori declined his Senpais offer to "help" once again, only to change his mind after being offered another R-18 Video by Tokita.
*** enter the 2nd room alteration, decorated by hardcore otaku Kouhei that filling up the whole room with Anime girls figures and posters.
*** Iori enraged by his room's appareance (which now looking like an otaku room.), tear down one of the (copied) poster leading to Kouhei cursing him and all his descendants for ruining his "Otaku living alone starter set". Iori later retorting by saying it's not reasonable to curse all of his descendants just for a (copied) poster.
*** The reason why Kouhei volunteered to help ? Tokita and Kotobuki offered an adult video of middle school girls for him to watch!
*** Iori angered at Kouhei and the two senpais tell them that he want a room decoration that is the opposite of the "otaku" room, in which been taken in the wrong way by Kouhei and leading to Iori's room 3rd alteration that takes the cake as... a room with BL/Yaoi's decoration all over the place!
*** the situation turn to worse when Nanaka come into Iori's room to offer help while Tokita and Kotobuki trying to watch one of the Boys Love video and by the time the "intimate" conversation from the video been heard by Nanaka, it lead to another awkward misconception from Nanaka about Iori's sexual orientation.
*** the whole situation above then making Iori goes "super saiyan" rage and tearing up blood from his eyes while he determined to make his room into the best room ever... by decorating the whole room with sticking her cousin Chisa's pictures all over anime figures, dakimakura and posters to suit up with Nanaka's sister complex nature.
*** after all the hard work, Tokita revealed that the mix-up party have been canceled. Making Iori frustrated that all the work is all for nothing.
*** at the same time, Chisa (the concerned person whose pictures have been pasted all over the room.) came into the room and after observing the room is now filled with her photos, drive away Iori from the room and end up relocating his room into the ramshackle building outside the main house. Poor Iori just can't catch a break.

** for the sake of making Nanaka approving him to go into a mix-up party with Oumi Women University, Iori determined to convince Nanaka by tidying up his room into "independent adult" like with the help of Tokita and Kotobuki (in which joined by Kouhei later.) The whole tidying up room scenes is hilariously priceless, with each alteration of Iori's room is worse than the latter.

** Iori realises he doesn't know the way home, and tries to get Chisa to lend him her clothes, earning him a trip with the nice men in blue. Later he tries to get Kouhei to do the same, ending in the same way.

* In the first chapter of the {{Manga}}, Iori Kitahara is ready to start his college life; as he stands in front of the titular "Grand Blue" diving shop, he wonders to himself what sort of new things he'll experience while staying here. Upon opening the doors, he's treated to the picture seen on this page, the EstablishingSeriesMoment, and the tone set throughout the story.