Moonbin & Sanha

Moonbin & Sanha was the first official sub-unit of South Korean boy band Astro. Formed by Fantagio in 2020, the group was composed of two Astro members: Moonbin and Yoon San-ha. Their debut extended play, In-Out was released on September 14, 2020.

Pre-debut
On August 21, 2020, Fantagio Music released an image teaser with a logo and a date confirming that Moonbin and Sanha would form a sub-unit and release an EP in the next month. Before debut, both Moonbin and Sanha co-hosted the music show Show Champion since March 2020 along with Verivery's Kangmin. In a press Q&A, Moonbin and Sanha stated that their chemistry while co-hosting inspired them to form a sub-unit.

2020–2023: Debut with In-Out and Refuge and Moonbin's death
On September 14, 2020, Moonbin & Sanha officially debuted with the EP In-Out and its title track, "Bad Idea". A week later, on September 22, they gained their first music show trophy with the single on SBS MTV The Show. A week after its release, In-Out debuted at number 9 on the weekly overseas album chart of Oricon and at number 2 on the weekly album chart of Gaon.

On February 11, 2022, Moonbin & Sanha released the pre-release single "Ghost Town", before the release of their second EP Refuge on March 15, featuring the title track "Who".

On December 3, 2022, Fantagio announced that Moonbin & Sanha would make a comeback on January 4, 2023, and scheduled to return with their third EP Incense.

On April 19, 2023, Moonbin was found dead, thus resulting in the sub-unit's disbandment. On April 27, Fantagio confirmed the unit's Weverse community would be shut down on April 30, nearly 2 weeks after its initial creation.

Fan-con tours

 * DIFFUSION (2023)