The cyclist crossed into the path of the bus, which was unable to stop in time, said Tower Transit.
The restaurant has been asked to suspend operations.
The restaurant was said to have been the subject of previous public complaints.
The deceased, who has been identified as a 64-year-old man, did not have any external injuries.
One netizen suggested that it could be a new driver who was too accustomed to using footpaths.
The victim, believed to be in his 20s, was visiting Japan with his mother.
About 80 people were evacuated for precautionary measures.
This is not the first incident of high-rise littering at the location said Mr Siow.
BMTC clarified that there are "no restrictions" imposed on recruits when they book out.
Residents say games started at dawn & sometimes involved four groups playing at once.