When he finds out that you're pregnant.

N: Don't you know how hard it is for me to take care of five other babies?

Leo: *Jumps on a bike and rides away*

Ken: Ottokaji?! (What do I do?!)

Ravi: B-But what about me?

Hongbin: *hugs you* Thank you for telling me that yeobo. *pulls away* Now let's go see if it's actually mine.

Hyuk: I'm too young to have a kid!! W-Wae?!