Sana posted several photos on his instagram on the 18th, along with an article called "Denim ⁇ ". The photo shows a picture of Sana wearing Denim wearing a black sleeveless crop and a wristband. In the photo, Sana boasts a solid abs with a doll-like beauty. On the other hand, TWICE, which Sana belongs to, released the mini 12th album 'Ready Toby' on the 10th and is working as a title song 'Set Me Free'.