- Ensemble Dark Horse: Aikawa's two friends, Kei and Fumi, are just as loved by fans as her.
- Fan Nickname:
- Yurishiki, due to the Les Yay of the show crossing the line from text to subtext on numerous occasions.
- Yuru-Yuri Season 3. It doesn't help that two of Yuru-Yuri's seiyuu voiced for two of Yuyushiki's main Girls (Rumi Ookubo as Chinatsu and Yuzuko, Minami Tsuda as Yui and Yui). And for added bonus, both shows have a main girl named Yui.
- Les Yay:
- Yui is pretty much a target of this, as it seems everyone barring Matsumoto-sensei has the hots for her.
- The first half of episode 5—an Origins Episode of sorts between Yui and Yukari—sounds like the two girls are in a stable Romantic Two-Girl Friendship or maybe more, especially given Yukari's choice of words. The two Holding Hands doesn't help.
- Kei, who is one of Aikawa's friends, approaches the trio and tells (not directly; she was thinking it) Yui not to take Aikawa away from her. In episode 7, her behavior slightly resembles jealousy. Though two episodes later, after being helped to buy her food by Yui, Kei warms up to her and tells her that she can touch Aizawa's chest...but only once.
- Or, also in episode 7: both Yuzuko and Yukari want to hit Yui's rear.
- Episode 10's commercial break shows Yukari and Yuzuko leaning in as if they are about to kiss... only to suddenly turn towards the camera as if caught in the act.
- Episode eleven's 'dripping wet' conversation.
- Memetic Mutation: SEPTEMBER!!!!!!!!
- OT3: Yukari-Yui-Yuzu. Lampshaded by everyone in their class. And out here in the real world, it's pretty rare to find anyone who doesn't ship the three as a polytrio.
- Poison Oak Epileptic Trees: Yui is crazy, her two friends are just sockpuppets, and Okaa-san-sensei is her caretaker.◊ This tree is brought to you courtesy of 4chan.
YMMV / Yuyushiki