Memory Alteration.

"Where are you guys going to?" Nana was the first to ask the moment Tae-oh came out from his bedroom dressed like he was going somewhere.

"We think he needs a break. He has been indoors for too long, so it's best we take him out to have fun," Min-Jun suggested as he signaled for Mi Cha to come to him.

"Then shouldn't we all go out together? We could all do with the..."

"No. We need a guy's time-out! Besides, do you want to leave Jin-A alone with the baby?" Tan asked Nana who had been protesting.

"I think I have an even better idea..." Min-Jun asked with his genius smile as he had just thought of a million-dollar idea.

"Let's hear it," Mi Cha said dryly.