NEOSTRIA-X is a South Korea based J and K rock duo. It consists of soloists Yusimí Mercedes Caridad Rodríguez and MONOKOR. They debuted on July 24th, with the song Eclipse Protocol.

MONOKOR, born Kyeun Seul-ah, debuted on July 15th with the song “Chaqueta” by NAORIII. MONOKOR was born in Incheon, South Korea on April 7th, 1999. She is fluent in Korean and has knowledge of some Japanese.

YUSIMÍ, known as Yusimí Mercedes Caridad Rodríguez in her solo work and debuted on July 21st, with the song “Boiling Point” by NAORIII. YUSIMÍ is fluent in Korean, Japanese, and Spanish, and is Cuban-American, born on January, 23rd, 1999.

NEOSTRIA-X debuted with the song “Eclipse Protocol”.