Vol 4: Ch 240 - Everything Revealed
===== Flashback before hearing the familiar voice of someone =====
After the Jun couple eating, all of them entered the room without noticing that someone following them and before closing the door some object got thrown out on the floor then pressing a button and go back into the living area without worry because that someone listening to everything in a very calm demeanor. After hearing the little girl's outburst, he got up and said to them.
"Grandma and guys, I need to use the restroom"
"Okay" then that someone left and interrupt their discussion.
"Let me do it"
"....."
Everyone freeze the moment they heard a familiar voice and they can't believe that all of them are being careless, right, all the kids, they need to know but at the right time and not this one.
After recognizing the voice everyone looking at Mei as if asking her, what are we going to do now?