http://www.sukigroup.com.sg/sakura.htm
this is the suggestion of where we will be going :

Buffet Prices (Exclusives 7% GST)
Weekdays
Dinner
$24
(additional $2 on weekend, PH & Eve of PH)
321 Orchard Road Orchard Shopping Centre #02-01/06

Yuki-yaki - Weekdays: BBQ + SteamBoat is $16.90 (lunch) $18.90 (dinner)
Ice-cream is additional $2 per person and drinks is also $2 per person.Time limit is 2 hours for non-ice cream and.5 h 2ours for ice cream.
Its at cathay cineleisure orchard (NEED TO CHECK WHETHER ITS HALAL A NOT )