Ayuzawa Kou (鮎沢甲, born on November 1, 1999) is a former 2nd Generation Little Ouji and member of Japanese pop group Luminus. He joined Little Ouji on December 15, 2009 and graduated on June 26, 2013.
On December 15, Ayuzawa, alongside 3 other boys, succesfully passed the second auditions for HoshiBoshi Pro, making up the 2nd Generation Little Oujis.
On May 25, it was announced that Ayuzawa alongside Saionji Hiro, Akimoto Kureno, Yamagata Ryuu and Miyazono Takumi, were to be members of the new group of HoshiBoshi Pro, Luminus. They debuted on June 26 with "Jinsei GAME".
- Name: Ayuzawa Kou (鮎沢甲)
- Nickname: Kou-kun, Bakakou, Human JukeBox, Idiot Ouji, #1 Baka
- Birthday: November 1, 1999 (age 15)
- Birthplace: Fukuoka, Japan
- Blood type: A
- Height: 174.5cm (5"7)
- HoshiBoshi Pro Status:
- 2010-12-15: Little Ouji
- 2013-05-25: Luminus Member
- UP-FRONT PROMOTION Status:
- 2010-12-15: Member
- Months in Luminus: 3 Months
- Luminus Color: Orange
- Eastern Zodiac: Rabbit
- Western Zodiac: Scorpio
- Charm Point: Wit
- Weak Point: Is completely dense and lacks common sense
- Strong Point: Never gives up!
- Favourite Animal: Penguin
- Special Skill: double-jointed
- Hobbies: Singing, dancing, fooling around
- Favorite Food(s): Sweets
- Least Favorite Food(s): Cucumber
- Favorite Color(s): Blue, Purple, Green
- Favorite Sport: Soccer
- Looks up to: JupiNus, SMAP, Sexy Zone, AoiSora, SHINee
- Favorite Song: "3,2,1" by SHINee
- HoshiBoshi Pro Groups:
- [2013.06.26] Jinsei GAME
- [2013.07.20] Cosmic Dreamer
- [2013.08.31] Super Delicate
- Is known as the idiot in the group
- His nickname, "Idiot Ouji", was given to him by Saionji Hiro.
- If he were a girl, he would want to be best friends with Akimoto Miharu, Fujiwara Kumiko and Takahashi Rie.
- His ideal girl is someone who is like him.
- He and Akimoto Kureno are known as the baka-duo.
- He has a twin sister named Kyou.
- If he was a girl idol, he would want to join NeXus.
- He is currently in his first year of high school.
- Has the same first name as one of Ao Haru Ride's main characters, Mabuchi Kou.
- Has the same last name as the KWMS character Ayuzawa Misaki.
- He was currently the tallest member of Luminus. He is now the 2nd tallest member of Luminus.