Never ask to see the rest of their house. Sometimes they provide slippers for you. If they offer you a drink or food, don t refuse. Expect your glass to keep on being filled if it s empty. They sometimes give you little gifts so bring some gifts from your home town so you always have a gift ready to give to them.
Gift exchanging is a big thing in Japan.
Expect the people to be very punctual when you arrange to meet with them. There is no great selection of deodorant in Japan. Deodorant also tends to only come in the spray type. If you like stick deodorant, bring your own supplies. Make up is made for a darker Japanese skin tone.