Tsukiyama Akiharu (築山明治), better known as Miku (みく), is a Japanese singer.
- Stage Names: Miku (みく), miku
- Birth Name: Tsukiyama Akiharu (築山明治)
- Blood Type: A
- Date of Birth: January 5, 1984
- Place of Birth: Nagasaki, Japan
- Family: Parents, younger sister
- Bnads / Groups:
- Favorite Color: White, Black, Red, Gold and Silver
- Favorite Food: Sushi, hamburgers, ramen
- Favorite Brands: LHP, JACKROSE, BVLGARI, JUSTIN DAVIS, ROYAL ORDER
- Hobby: Shopping, walking, cooking, and playing the guitar
- Respected Person: Daisuke from Kagerou
- Tobacco: Salem Pianissimo
- Cologne: BVLGARI PURO
- Piercings: 2 in left ear, 1 in right ear, 2 around mouth, 1 on arm
- Miku was a hard-working student at school and liked math and sports (judo) the most.
- Sometimes the lyrics don't make sense, but normally they tell about romance or daily life.
- Miku got his interest in music mostly form watching Kagerou live, but he was interested in music before that as well.
- Miku likes Donald Duck very much and thinks he has a funny voice. He has had stuffed Donald plushies during live clips, and can also speak with a Donald Duck voice. He wrote a song for Donald, called "Donald Duck no Magical Adventure".
- Miku has also used the word Tiramisu, which is an Italian dessert. He said his meaning of the word is secret, but that it comes from when he was in school.
- Often you see the word nyappy which is Miku's version of happy. The opposite of it is, of course, un-nyappy.
- Because of Miku there is almost a whole new language, like his word "tekesuta, which means "save me, and the real version of the word in Japanese is tasukete.
- Miku's (deceased) hamster, Milk, is also famous.
- Also one of Miku's nicknames is Milk-tea.
- Miku now has a dog named Nyappy.
- Miku's hair is normally colored in a brown shade.
- When An Cafe started, Miku often had hairclips in, and he still occasionally does this.