In 2014, Yoo launched a local clothing line named Newkids Nohant to create Hangul-themed T-shirt designs. He then donated the profits worth 100 million won made through the clothing line, opening up the Newkids Yoo Ah In Charity Fund in 2015. The fund will be used to provide aid for college tuition and educational expenses for the students who attend college while living in or after retiring from residential care centers. On April 18, 2014, Yoo quietly joined the Sewol Ferry relief efforts after the Sinking of MV Sewol tragedy, and secretly sent supplies to the family members of missing passengers in Jindo.