Clannad (TV)

Atsuko Enomoto who voiced Miyazawa Yukine of CLANNAD is also the seiyuu for Miyazawa Yukino of His and Her Circumstances. Their name is almost the same except the last letter of their first name ends differently.

On episode one, Tomoya makes out that Nagisa says "Hamburger" while standing in front of the Drama room. This "might" be a reference from One: Kagayaku Kisetsu E. In the game, Mayu Shiina was obsessed with Hamburgers. At one point in the game, she stops in front of a teriyaki stand and says to Kouhei "Hamburger" in a way similar to Nagisa.

Nayuki's Keropi makes an appearence on episode 6 when Fuko and Sunohara are having a carving contest. Fuko ends up getting confused and carving a wooden Keropi.

The transition wipes used to switch scenes are the same ones used in the actual CLANNAD visual novel.

The episode title screen is similar to the CLANNAD visual novel's start menu. When an arc or story comes to a conclusion, a light orb is added to the title screen, likewise in the game.

The last scene in the ending song "Dango Daikazoku" is the same as the picture on the soundtrack cover of the CLANNAD Image Vocal Album Sorarado Append.

On episode 19 of CLANNAD on 13:53-13:55 you can see Kitagawa's dancing costume from Kanon but it's blue

Episode 24, the second OVA, is actually told in an alternate universe, where Nagisa doesn't exist and Tomoya ends up dating Tomoyo.

The character Mei Sunohara is closely based of the character Michiru in AIR(TV). One most important feature is that they are both voiced by Yukari TAMURA.

Sanae Furukawa's hairstyle and disposition are similar to Belldandy's in "Ah! My Goddess." Both roles are voiced by Kikuko Inoue.

In the summer special episode, the incest scene of Sunohara and Mei may be a parody of Boku wa Imouto ni Koi wo Suru in which a similar scene between brother and sister occurs.

In episode 1 at 11.28 the juice Youhei Sunohara is holding is the same peach juice Misuzu Kamio drinks in another Key series, Air TV.

In episode 4, when Youhei was asking to help Nagisa, Tomoya thought how would it be like if it was an RPG. The scene that followed is a reference to the fight sequences in Little Busters!, another visual novel made by Key.

In episode 6, Kanako, a character from Tomoyo After ~It's a Wonderful Life~ (a spin-off sequel to CLANNAD made by Key) made a cameo appearance just before Youhei bumps onto Tomoyo.

In episode 6, Yukito from Air makes a cameo appearance.. He's sitting on the background of the second (of three) frozen frame before the scene where Ibuki-sensei appears.

In episode 6, Final Hitode Tsukai Fuko is a reference to the post-apocalyptic setting of Planetarian: Chiisana Hoshi no Yume, a kinetic novel by Key.

In episode 6, at 20:49-20:52 the person receiving one of Fuko's carved starfish looks extremely similar to Ryoko Asakura from The Melancholy of Haruhi Suzumiya.

In episode 7 6:41-6:44 shows Fuko doing Haruhi's stare from The Melancholy of Haruhi Suzmiya.

In episode 9 at 16:34-16:37, you can see Key-chan cheering for Kouko and Yusuke on the far right. Key-chan is the mascot character for Key, the company that made the CLANNAD visual novel.

In episode 10, the song that the violinist is playing is Canon. A not so subtle reference to Kanon 2006 which was also made by Kyoto Animation.

In episode 11, Ichinose Kotomi says "Day before yesterday I saw a rabbit, and yesterday a deer, and today, you." This is a recurring line originating from Robert F. Young's science fiction short story, The Dandelion Girl. It may also be a nod toward RahXephon, which plot is partially inspired by the story.

In episode 12, Kyou is trying to win a huge anteater doll on the crane game. This doll was the same Sayuri gave to Mai as a birthday present in Kanon.

In episode 20, after Tomoya tells Fūko to stay quiet and act like a zombie, Fūko does a motion that looks very similar to a famous part of the "Thriller" dance by Michael Jackson.

In episode 21 Nagisa wears a costume similair to the Kanon 2006/2002 uniforms

In Episode 21 when Tomoyo Sakagami enters wearing glasses, she is questioned as to why she doesnt wear contacts instead, and comments on them being scary. This is comparable to Miyuki Takara's scene in "Lucky Star" in episode 1.