Will that not make daddy become a pitiful loner?

Youyou, who smilingly reached his mother's side, sharply spotted some lipstick smudge at the corner of her lips. His brows creased slightly as he cast a suspicious look on a certain deflated man, only to see some red smudges on his lips as well.

Being the meticulous boy that he was and sensing the awkward atmosphere, he easily understood what had happened. "Here I was wondering of your whereabouts! Turns out you two were kissing over here behind our backs!" He was fuming.

His mother flushed deeply. "W-We didn't—"

"No? Don't try to lie to me! I'm not as gullible as that fool of my brother!" rebutted the boy in all confidence and seriousness.

His father, meanwhile, could not help but wish to thump him in the head.

This party pooper is always disrupting our private time!

Can't he be more tactful?