Masayoshi Ōishi

is a Japanese musician. His professional music career began in 2001 as vocalist of the band Sound Schedule. Following the band's disbandment in 2006, he began a solo career, releasing his debut single "Honoka Terasu" in 2008. Sound Schedule reunited in 2011, with Ōishi returning as the band's vocalist.

Ōishi is also vocalist of the musical group OxT, led by composer Tom Hack. In 2014, Ōishi's song "Kimi Ja Nakya Dame Mitai" was used as the opening theme to the anime series Monthly Girls' Nozaki-kun, and in 2018, his song "Otomodachi Film" was used as the opening theme to the anime series Tada Never Falls in Love. In 2023 his song "Megane Go Round" was used as the ending theme to the anime Suki na Ko ga Megane o Wasureta. He has also written songs for other artists, such as "Yōkoso Japari Park e" which was used as the opening theme to the anime series Kemono Friends.

Early life Ōishi was born in Uwajima, Ehime on January 5, 1980.

Career

In 1999, Ōishi formed the band Sound Schedule with other members of his university's light music club, making their major debut in 2001. This was followed by the release of his second single on September 24, 2008. In November of that year, he released his first album .

In 2009, Ōishi released two singles: "Love" on June 17, and on October 21, as well as his second album .

In 2011, Sound Schedule decided to reunite after a five-year break, with Ōishi returning as the band's vocalist. Although the reunion was intended to be a temporary affair, at the end of the band's tour in 2012, it was announced that the band would continue its activities.

In 2013, Ōishi released his fourth album . He also began collaborating with composer Tom Hack for musical releases. Their first collaboration was the single "Go Exceed!!" which was released on October 30, 2013; the title track was used as the first opening theme to the anime series Ace of Diamond. This was followed by the single "Perfect Hero" which was released on May 21, 2014; the title track is used as the second opening theme to Ace of Diamond. That same year, he released the single on August 27; the title track is used as the opening theme to the anime series Monthly Girls' Nozaki-kun.

In 2015, Ōishi and Tom Hack formed the musical group OxT. The group's first single was "Kimero", the title track of which was used as the second ending theme to Ace of Diamond. That same year, Ōishi also released his fifth album .

In 2016, Ōishi wrote the song , which was used as the opening theme to the anime series Kemono Friends. His own cover received over one million views in the span of two weeks on Japanese video-sharing site Niconico. He released his sixth album on July 13, 2016.

In 2017, Ōishi released his seventh album , which included a cover of "Yōkoso Japari Park e". The following year, he released the single , the title track of which was used as the opening theme to the anime series Tada Never Falls in Love.

In 2018, Ōishi collaborated with Tsuburaya Productions for their 28 entry of the Ultraman Series, Ultraman R/B. Ōishi's song Hands was used as the shows opening, and another song Ultra Sing! was made for the album released to promote the series later in the year.

In 2021 his song "Imperfect" was used as the opening theme to the anime series SSSS.Dynazenon.

In 2023 his song "Megane go Round" was used as the ending theme for the anime The Girl I Like Forgot Her Glasses. He composed and wrote the lyrics to Airi Suzuki's single "Saikyō no Oshi!"; it was used as the theme song to the live-action television drama adaptation My Oshi Is Now My Boss, and Ōishi also made a guest appearance in the drama.

In 2024 his song "Namaramenkoi Gal" was used as the opening theme for the anime Hokkaido Gals Are Super Adorable!.

In 2025, Ōishi returned to compose and write lyrics to "Isshun Kimi Oshi" for Airi Suzuki, which was used as the theme song for My Oshi Is Now My Boss: Full Throttle; Ōishi returned as a guest character for the drama.

Personal life

In 2020, Ōishi announced he had married a woman who is outside of the entertainment industry.

Discography Singles +Title Peak Oricon position Peak Oricon chart position Release date: November 26, 2008103 Release date: November 19, 200985 Release date: January 25, 2011116 Release date: February 20, 2013132 Release date: December 2, 201539 Release date: July 13, 201632 Release date: July 26, 201715 Release date: June 26, 201924 Release date: August 25, 202119 Release date: March 23, 2022141 Release date: February 7, 202416