1. May I know what's your budget?2. Check out the Information Counter at Nagoya JR. They have monthly English newsletters and magazines that introduce interesting restaurants and current issues too, with maps in English. I know because I've lived in Nagoya for 2 yrs. =)
3. There isn't much SEA food here, esp Malay food. How about Indian cuisine? North Indian food is more popular here. Try the Indian restaurant at Takashimaya Shopping Centre at Nagoya JR eki. I think it's on 13th or 14th floor. Its curry is the closest to SEA food.
Japanese don't eat much spicy food so most of the menus will be catered to their taste buds.
I hope this helps. By the way, are you from SEA?