Students with the Japanese nationality can travel to Switzerland without a visa. However, if you are staying longer than 90 days you will need to get a residence permit. You need to apply for a residence permit before traveling to Switzerland. See for the addresses of the Embassy and Consulates:
After you have arrived in Switzerland, you need to register at the municipality where you are staying. Please note that this registration needs to be done within 14 days after arriving in Switzerland. If you are registering in the Canton of Zurich, the municipality will forward your registration to the Migration Authority in Zurich. The Migration Authority decides about residence permits.