I advise you not to say to him and you should manage to not be very affectionate, because they scare it. The Japanese are extremely shy, I thinl that it is better that you try to be gentelly , not with gifts, but knowing what he likes, type of things and to involucrate in them. For them it is difficult to express their feelings, so if you can identify when he is sad, angry or others, and can you give him the necessary words at the right time, I think that he will value it enough. I hope that it can help you!! good louck!! japanese are great peopple...
