'BTOB' Seo Eunkwang and Lee Minhyuk formed unit 90TAN (Gugongtan).

On the 22nd, BTOB Company released the character motion and title poster for 90TAN's first single 'TANG TANG TANG' on its official website.

The poster contained images of the members. They walked down the hallway under dim lighting. The unique composition, as if observing them through CCTV, raised curiosity about the concept.

The image transformation also stood out. They matched their strong casual outfits with colorful accessories. They also showed off their bad boy-like charm and added charisma with their eyes.

The unit name '90TAN' symbolizes that BTOB was born in 1990. Seo Eunkwang and Lee Minhyuk are the eldest line of BTOB. The only member of the same age born in 1990.

Seo Eunkwang will be active as ‘SILVER LIGHT’, and Minhyuk Lee will be active under the solo name ‘HUTA’. BTOB presents music and content differentiated from its colors.

An official said, "Seo Eunkwang and Lee Minhyuk have shown off their strong chemistry through group activities for 12 years. Please look forward to the new music that will be released as 90TAN."

Lee Min-hyuk appeared on the stage of ‘Water Bomb Seoul 2024’ on the 5th. At that time, Seo Eunkwang appeared as a surprise guest and received cheers by performing the unreleased new song 'Tang Tang Tang'.

Meanwhile, 90TAN will release its first single on major music sites at 6 PM on the 31st.