Kang Joo-eun, a third-year teacher and devoted male fan, had always been a fan of the idol group HABIT—they had been a part of his life.

“Habit, which was doing so well, suddenly disbanded. Was it discord or a contract issue?” “Habit, for what reason… The sudden disbandment scandal with the contract expiring.”

The week after their successful concert, Joo-eun heard the shocking news: HABIT was suddenly disbanding.

Feeling down, he poured himself drinks. For the first time in his life, he blacked out…

“What’s wrong, Joo-eun?” “Are you hurt, hyung?”

When he came to, the pre-debut members of HABIT were standing right in front of him!

…No, it was nice, but—

“Why am I naturally stuck in this situation?”

[21 years old, Lake Entertainment debut group trainee, right?]

“No. Name: Kang Joo-eun, age 27, occupation: teacher.”

[This is crazy, why am I remembering such random things?]

Even worse, a strange ‘square’ system window suddenly appeared and started spouting nonsense:

[A quest has arrived! Become a great idol by debuting as a member of the idol group ‘Habit’ with other trainees inside. Do you accept? (Yes/Yes)]

You are asked to debut as an idol. Even… as Habit!