South Korean musical duo
Wooseok X Kuanlin (우석X관린) was a South Korean musical duo formed by Cube Entertainment in 2019, composed of Wooseok of Pentagon and Lai Kuan-lin, a former member of Wanna One. On February 20, 2019, Cube Entertainment announced the formation of a new group project featuring Lai alongside Wooseok. The duo debuted on March 11 of the same year with "9801," featuring title song "I'm a Star".
History.
Pre-debut.
On February 19, 2019, Cube Entertainment announced a new unit. On February 22, Cube officially revealed the unit's name and members. 
2019: Debut with "9801".
Wooseok X Kuanlin debuted on March 11, 2019 with the EP "9801" and its title track "I'm A Star". The EP contains one unit track and two solo songs each from the members. It debuted at number two on the Gaon Weekly Album Chart and sold over thirty-six thousand copies.
References.
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