On August 18, 2023, TWICE's Jihyo will release an album that captures her true self and showcase her skills as a solo artist. Jihyo presents her first mini album “ZONE”, which fully expresses her intrinsic charm and musical personality by adding her touch to every inch of the work, and fulfills the high expectations of ONCE (fandom name) at home and abroad. "ZONE", the name of her solo debut album, is made by combining "Z" and "ONE," which implies that it is the “Jihyo(Z)’s first (ONE)” and “Jihyo(Z)’s complete ONE” work. "Killin' Me Good", the title track, focuses on showcasing "who Jihyo is" and captivates the listener with Jihyo's signature rich and powerful voice over a rhythmic and groovy sound. Jin-young Park, a representative producer of JYP Entertainment, wrote the lyrics. He enhances Jihyo’s unique sensitivity who expresses her emotions neatly with lyrics, such as "I think about the feeling you make me feel every ten seconds. I’m surprised at myself" and "Makes me honest and express it all". Outstanding artists, including Melanie Fontana and Lindgren who have worked with world-class singers such as Dua Lipa, Maroon5, and Ava Max, and Lindgren who is a writer of The Monsters & Strangerz, worked together to create a masterpiece with Jihyo’s unique color. The music video and visual concept of "Killin' Me Good" incorporates a variety of tones and moods to effectively express Jihyo's three-dimensional charm. Jihyo broadcasts her capabilities and presence as a solo artist, beyond what she has shown as a member of TWICE. She participated in all six songs ("Killin' Me Good", "Talkin' About It (Feat. 24kGoldn)," "Closer," "Wishing On You," "Don't Wanna Go Back (Duet with Heize)," "Room," and "Nightmare") to reveal her accumulated musicality. Especially, she radiates fresh musical energy and her different side in the songs with American rapper 24kGoldn, who achieved the No. 1 spot on the U.S. Billboard Hot 100, and musician Heize, who has a unique sensibility. The last track, "Nightmare," premiered at TWICE's fifth world tour, "READY TO BE," and was warmly welcomed by fans around the world. It is expected to be a welcome gift to ONCE who have been waiting for the official release of this song. Jihyo, who has a clear bright musical character, brilliantly and beautifully sings about ONE musical world and deep inner side through her first solo album “ZONE”. As the second soloist in TWICE after Nayeon, she is expected to perform at her best both as a group and as a soloist.