Alternate Character Interpretation: In the game, Tsukasa was the only girl who saw through Risa's lies. In the anime, she fell for it just like everybody else.
Also, Risa never apologized to the other girls for her actions in the game.
Sae Nakata isn't clumsy or naive at all. She knows exactly what she's doing in the anime when she trips up boobs first into Junichi's face. Check some of her sly grins. She's putting on a performance and indulging the guy she likes.
Hibiki might also count in a lesser degree. Aside from not being a main character, she has some fans and a healthy amount of fanart. She also has three specific episodes in Various Artist which are quite a lot for a side character for Haruka and Ai.
Kaoru Tanamachi is often referred to as "Sex Hair".
Other girls also get their own nicknames. For example, Rihoko Sakurai is "Fatty" because of her appetite. Others refer to her as "Healthy."
Less-definitive examples include "Classrep"/"Bitchrep" for Tsukasa Ayatsuji, "Raburi" for Haruka Morishima, "Earcancer" for Sae Nakata, "Swimgirl" for Ai Nanasaki, "Imouto" for Miya, and "Yandere" for Risa, Junichi's Stalker with a Crush.
In Tsukasa's arc, many fans and fansubbers have taken to calling her "Queen Tsukasa".
Fanon Discontinuity: A lot of fans are already raging hard enough to say that Rihoko's arc never happened.
Hilarious in Hindsight: In the bath, Kaoru ponders her new feelings for Junichi and thinks he hasn't changed while she has. But (in the anime, at least) she's wrong, since Junichi has been having at least sexual thoughts about her.
Later, out of the blue Junichi asks Kaoru if she has someone she likes; she refuses to answer and asks him the same question, to which Junichi just replies "no". While this scene illustrates their attitudes at this point of her arc, it's also made funnier/poignant by the foreknowledge that Junichi isn't exactly being honest.
Ho Yay: Junichi gets his fair share with Umehara. Between claiming to share a 'Lover's Parfait' with Umehara on a date with Haruka, and the two of them becoming the protagonists in a Yaoi manga by Sae, one has to wonder. Never mind that in another Haruka event, Haruka competes against a man, who, on the condition of his victory, gets to take Junichi on a date.
Les Yay: Tons with Hibiki, occasionally with Ai as well. Even Miya isn't safe, as she gets glomped at one point due to Haruka being overcome by the sheer moe Miya was exuding at the time.
Amusingly, her seiyuu is well known in real life as the "Yuri Pimp", with lots and lots of Les Yay involving her colleagues.
Signature Scene: Junichi kissing the back of Haruka's knee in the shed.
Tough Act to Follow: Let's just say that Seiren, especially after the planned second season and it's own visual novel got cancelled, was practically condemned to forever live under Amagami's shadow.
To give you an idea of this, Amagami artworks on Pixiv are still being made on regular basis to this day and number more than 10k artworks. In contrast, Seiren's artworks topped out in a measly 200s as of 2022.
To a lesser extent, Photo Kano is also heavily overshadowed by Amagami. That it's not a "direct" sequel to Amagami, unlike Seiren, only slightly works in its favor.
The Woobie: Kaoru's soft-spoken friend Keiko. She confesses to a guy and waits a month for his answer. Instead, the guy just asks for a kiss. She turns to Kaoru for advice, who then recruits Junichi for a male perspective. Junichi suggests writing a letter requesting a proper reply. Keiko spends a lot of time writing the letter, only to have the guy and his cronies pass it around and laugh at it the next day. Kaoru does not take this well. To be fair, said guy and friends get a calm but stern reprimand from Tsukasa, and they're shown reflecting on their actions.
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