Hidagyu

"Aah so cute... and delicious..."

- Ao Nanami describing Hidagyuu, Chapter 2

Hidagyuu (ヒダギュウ) is a popular reoccurring mascot character from Rocket Monsters, a fictional series within the Yozakura Quartet universe.

Appearance
Hidagyuu is a super deformed bipedal brown cow with small horns and plain circular white eyes. It has a nose ring and is usually seen in a apron.

Plot
While watching television, Ao Nanami sees Hidagyuu explains to Akina Hiizumi what it is. Junta's father brings him a Hidagyuu plush as a present after being recalled from a job transfer.

In the Hana no Uta Anime, Lila disguised as a child named Lily uses two Hidagyuu plushes as dummies disguised as her fake parents. In this adaptation a drunk Hidagyuu is present at Kohime Sakurano's party.

When meeting Enjin Hiizumi atop the Nanagou, Lila uses an animated Hidagyuu plush and makes it monologue about destroying the world, mocking Enjin. The Hidagyuu plush then begins playing with another Hidagyuu plush.

After Lila's attack, Mizuki, Midoriko Amano and Sawaki talk about being unable to remember the events from the night before. Sawaki asks Midoriko about her course choice documents but Midoriko finds that she is not even carry her bag with but instead a Hidagyuu plush for unknown reasons.

After cleaning the public pool, Kotoha Isone uses her Kotodama to create various inflatable pool toys, one of which is a large Hidagyuu.

When the Senate library becomes under attack by Hifumi, Lila creates a large Hidagyuu equipped with a shield and knight armour, to protect Kotoha from an attack. When Hifumi chases Midoriko disguised as Kotoha through the streets, Midoriko is knocked into a Hidagyuu statue, destroying it.