This is the introduction of txt also known as tomorrow X together. They are the mafia group and help BTS on mission.

Name choi soobin
Stage soobin
Personality cold good at controlling cares for his members as well as BTS
Position Mafia boss
Age 22
Strength good leader
Weakness  none

Name choi Yeon-jun
Stage   Yeon-jun
Personality  killed about 1 in GOT7 strong. Had a horrible past v
Position  assassin
Age  23
Strength loves to kill other gang who hurts BTS and txt  found out about yoongi and BTS secret by huneing Kai.
Weakness his past

Name choi Beomgyu
Stage beomie tiger
Personality savage loves his leader. Help BTS with yoongi revenge. Had a sister who was killed by Jackson gang can be cute but make him angry he rip you off 
Position  gun specialist
Strength weapons such as guns
Weakness his crew
Age 21

Name Kang taehyun
Stage  taehyun
Personality good at technology such as hacking other mission
Position hecker
Age  20
Strength helps soobin
Weakness his crew

Name huneing Kai
Position  spy
Personality playboy good at  hiding evidence. Have a great strength and very smart  youngest like jungkook but younger. Has a sister  cute but dangerous
Stage kai
Age 20
Strength fast learner  love BTS
Weakness his crew

This is the sub characters
They used to be good boy  now bad boy.
The above song is called good boy gone bad I love that song in txt. Part 2 in deja vu is coming soon. Also

Miss this soekie. Army will wait for you.

Abyss by Jin.  So emotional to listen and the heart of you Jin. We love you and miss you. You are special in our hearts.
Love army and readers who read this book. And support me.

Love you army and readers. 💜💜💜