Hi I have taken life cover with Argentum and appreciate Jack for the many follow ups and guided me to get the insurance at the right time. I would recommend this for foreigners staying in Japan.
Probably the only exchange office in Roppongi, apart from the automatic machines with terrible rates. Inside a building on the 9th floor, office 903. Ring the bell as door is closed. Open 1-6pm on weekdays only. Rates are okay, around 2% markup....