在日外国人向けに一応英語版も載せておきます。 ●Summary of steps to check whether someone is alive or not when they do not respond to your call in Japan. (note: this artilce is mainly written for people who are living in Japan, not for foreign tourists or foreiners living in other countries.) 1.Contact their family, friends or work place to confirm whether other persons can contact them. They might be just ignoring only you if you have a trouble with them. 2.Judge whether it is emergency or not by checking SNS (such as posts suggesting suicide, illness, etc), or ask acquaintances about their recent situation (such as they went to climb a mountain, they went to ski, they went to a beach, they were arrested, they were hospitalized, etc). Sometimes foreign smartphones lose reception in mountains if LTE band 18 or 19 (800MHz) is unavailable on the smartphones and foreigners in Japan may not notice it, and they may not be able to call help even if they got lost in a mountain, so it is important to confirm whether they went to a mountain or not. 3129 people got lost in a mountain in 2018, and 169 people are foreigners and 55% of them got lost during backcountry skiing. 3.Visit their home if they do not respond to anyone and there are obvious problems such as they did not come to workplace or school, and judge if it is emergency or not. 4.Call police according to degree of emergency. You can consult with police officers by calling #9110 if it is not emergency, or you can visit nearby police station to consult about the matter (athough Japanese police officers may not speak English or other foreing languages). You can also contactconsultation centersfor foreign residents in Japan. The consultation centers are located in each municipal but the users may be limited to foreignors who are currently living or working in Japan, and reservation may be also reuired for preparing an interpreter. Enbassy of each country in Japan will give you advice about how to contact to police to find a missing person, but you may be required to prepare credible evidences that the missing person was involved in a crime or an accident, or else the embassy may not help you. You should call police by calling 110 if it is really very emergency and you need police officers to come as soon as possible. You should not call police if it is not really very emergency because police officers are very busy for dealing with emergency matters. You should call Japan Coast Guard by calling 118 if a maritime accident may have occured such as someone went to sea for swimming or angling and did not come back (police is also OK because the police officer will contact Japan Coast Guard anyway). You should callDisaster Emergency Message Dialby calling 171 if a massive disaster happens such as earthquake, tsunami, eruption and flood. They might have left messeges about their whereabouts if they were alive. 5.Ask police officers to come their house and then ask a locksmith or the landlord to open the door of their house if they might have died in the house, or it is highly possible that they can not respond or move due to severe illness or injury. You have to pay about 10,000-20,000 yen to make the rocksmith open the door. 6.Visit nearby police office to write application to search for the missing person if they are not in the house and still missing. Police may call you later if they were found, or found to be imprisoned, or found to be dead.