Drippin (Cha Jun-ho, Hwang Yoon-sung, Kim Dong-Yoon, Lee Hye-hyeop, Joo Chang-wook, Alex, and Kim Min-Seo) releases its content series "LET'S DRIPPIN-777 Challenge" every Tuesday and Friday on its official YouTube channel.

The first start of the series, "777 Challenge," contains the challenge of Drippin, in which seven (7) members have to spend their living expenses within 70,000 won for seven days. After the seven-day challenge, all penalties will be given if they spend more than 70,000 won when the final amount is confirmed, and team dinners will be paid if they spend less than 70,000 won.

Drippin's first runner in the 777 Challenge was Kim Min-Seo. Kim Min-Seo, who overspent at a convenience store as soon as she started, also failed an unexpected mission, leaving a balance of 32,100 won.

Cha Jun-ho, on the other hand, has become the "King of Consideration" of Drippin, showing that he does not overspend. Cha Jun-ho, who ate as usual and ate snacks, earned 3,000 won by completing his mission, and spent 6,200 won, the smallest amount so far.

Hwang Yun-sung recognized the rules eight hours after the start of the challenge. Hwang Yun-sung, who flexed by buying drinks for the members, tried to earn 3,000 won for the mission but spent a total of 17,600 won when he failed the mission.