There are a lot of restaurants or food merchandise that put Halal certificate on some of the haram products, unfortunately. I guess this is not to earn more customers because Japanese people are very serious and responsible of what they are doing. I hope that this is because of misunderstanding or misinterpretation towards the religion. But of course, whatever the cause it may be, it is what upsets Muslims, including me. But in my restaurant, I am proud of myself that I will never do such thing, because that is my faith as a Muslim.