Ship

WooSan

Wooyoung

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Sana

About WooSan

WooSan is the fan-shipped friendship pairing between ATEEZ's Choi San and Jung Wooyoung, two members who have known each other since their trainee days at KQ Entertainment and are often called the group's most prominent 'soulmate' duo. They are both 99-liners (born in 1999), a shared birth year that often means close friendship in Korean idol culture. WooSan's friendship is extensively documented across ATEEZ's content and beyond. They have openly referred to themselves using their ship name in behind-the-scenes videos, call each other 'soulmates,' and both have matching Amicus Ad Aras tattoos on their right thighs — a Latin phrase meaning 'a friend until the end.' Wooyoung's tattoo was first spotted by fans in May 2021; San confirmed he had the matching tattoo in the weeks that followed. Their families are also unusually close: both San and Wooyoung call each other's parents 'Mom' and 'Dad' because their parents are genuinely good friends. On stage, WooSan are known for their intense performance chemistry in ATEEZ's most dramatic choreographies. Off stage, fans celebrate their constant stream of small, affectionate gestures — secret handshakes, thoughtful birthday gifts (Wooyoung once bought San a sous vide machine because San had been eating a lot of beef), and a general devotion that ATINYs find both heartwarming and entertaining.

WooSan is arguably ATEEZ's most popular intra-group fan ship, buoyed by an unusually high volume of verifiable, publicly documented moments — including the matching tattoos and self-referential 'WooSan' moments in official content. ATINYs maintain active WooSan communities across all major platforms.

Fun facts

✦ San and Wooyoung both have matching Amicus Ad Aras ('a friend until the end') tattoos on their right thighs. Wooyoung's was first spotted by fans in May 2021; San confirmed the matching tattoo in the weeks that followed.
✦ They call each other's parents 'Mom' and 'Dad' because their families are genuinely close friends.
✦ WooSan have multiple distinct secret handshakes.
✦ Wooyoung bought San a sous vide machine as a gift because San had been eating a lot of beef and Wooyoung wanted him to enjoy it more.
✦ They openly refer to themselves as 'WooSan' (their ship name) in ATEEZ's behind-the-scenes content and have called each other 'soulmates' on camera.

Moments

2021-06

Matching Tattoo Confirmation

After Wooyoung's Amicus Ad Aras tattoo was spotted by fans in May 2021, San confirmed on the Universe app in the weeks that followed that he had the matching tattoo on his right thigh as well. The confirmation was met with emotional responses from ATINYs who had followed their friendship for years.
2019-01

Fake Love Cover

WooSan performed a duo cover of BTS's Fake Love, which became one of the most-shared WooSan performance clips in the ATINY fandom for its raw chemistry and trust-dependent choreography.
2018-10

ATEEZ Debut

San and Wooyoung debuted together as part of ATEEZ under KQ Entertainment on October 24, 2018, having already developed a close friendship through shared trainee years.