"Hello..." Lau said in a lazy tone.
"Oi, greet properly BAKA!" Luna said while slapping Lau's head.
"Mm.. okay nee-san." Lau said as he bows.
"*sighs* What an idiot. Anyways, hello. Sorry for the bad introductions but I am Luna *points at Lau* and that is my idiot ototo Lau." Luna said politely. 
"Mmm.. nee-chan has a bad taste in men so... all you guys should... watch out from nee-chan." Lau said bluntly. 
Luna slaps his head again but harder. 
"Oi BAKA! Don't tell them somethin that's NOT true. AHO KA?!" Luna screams at Lau. 
"Mm.. goumen goumen. Anyways, hope you enjoy this little skit between me and nee-chan." Lau bows and continues to eat his bread. 
"*face palms* Sayonara. Please just say anything you want if your bored. Like my stupid ototo." Luna sighs and waves. 
While Lau nods and continues to eat bread peacefully.