"Orangestar", also known as MikanseiP, is a well-known Japanese VOCALOID producer. He was born in August 20, 1997 in Miyagi Prefecture.

For the origin of his producer name: as the young musician had always been fond of the word Mikansei (未完成, lit. imperfect), he decided to go for the name Orangestar (蜜柑星, which is read mikansei).

Orangestar's songs are known for their memorable and poetic melodies, and always strongly bear the theme of summer. As described by Orangestar and his illustrator friend M.B, their songs aim to express Christian values in the most simple forms of lyrics and illustrations.

Orangestar took a break from music activities from 2017 to 2019, during which he served as a missionary in Riverside, California, USA. He announced his return to Japan in December 2019, and has resumed his activities since then.

On December 2020, Orangestar announced his marriage to vocalist Kase (夏背). Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.