On the 17th of October, boy group Alpha:BAT made their comeback with 신세계.

This comeback introduced Alpha:BAT's newest member, Lambda, which currently sets the lineup at 5 members. However, it was also announced that later there will be an additional two members added to the group so the final line up will have 7 members.

Alpha:BAT's previous comeback was in July 2017, and the group have recently announce they will be having a 4 stop European tour in November.