Many Japanese,(Especially in the work,even between friends)The feeling isn't expressed straight.Because the reason does not want to worsen the atmosphere of the place or many Japanese match oneself with the person of the circumference.
It is a sometimes good thing.However , it has also a cowardly because some people later speak ill.
"Honne"=The plain feeling and idea
"Tatemae"=The remark that klled their feelings and a true thought
Many Japanese respect the harmony with the circumference.
However , it will also lead to stress!!