Invitation is the debut studio album from South Korean boy band UP10TION.

Starting in 2018, UP10TION released their second Japanese single album "Wild Love".

[1][2] On February 19, Up10tion first revealed their comeback with a message for their fans on SNS which they wrote "Invite Honey10 in March 2018 from UP10TION".

On March 8, it was confirmed Wooshin (now known as Kim Woo-seok) has returned to the group after being on a 9 month hiatus due to his psychological condition worsening.

Next, the riddle "JKKWBWSGHX" was the initial of member's first letter of their names (Jinhoo, Kuhn, Kogyeol, Jinhyuk, Bitto, Wooseok, Sunyoul, Gyujin, Hwanhee and Xiao).