On November 2th 2017, they made their fourth comeback of the year with the digital single She’s Mine, showing a more classy and sexy image. The song was produced by Coach & Sendo and the choreography made in collaboration with 1Million Dance Studio.

• She's Mine (Warning Letter)
• Official MV
  • Teaser 1 | 2
  • MV Making
  • MV Shooting BTS
  • Performance ver.
• Concept Film
• Jacket Making
• Dance Practice
  • Malaysia ver.
  • Christmas ver.
  • 1Million Studio ver. (with Ayno and Baron)
  • 2x speed ver.
  • Self-Cam ver.
• Fanchant
• She's Mine (Preview Show)
• Concept Photos
  • Man's Morning
    • St. Van | Baron | Ace | Ayno | Jacob | Lou | Ziu | Group | Bonus: 1, 2, 3
  • Man's day.
    • St. Van | Baron | Ace | Ayno | Jacob | Lou | Ziu | Group | Bonus: 1, 2
  • Man's night
    • Group | Bonus: 1, 2