You may need a visa for Japan if you have a Qatari passport

Travellers may need a visa to visit Japan for Business or Tourism. Nationals of Qatar possessing an ePassport in compliance with ICAO standards can register their passport at diplomatic missions of Japan in Qatar (Embassies, Consulates-General, or Consular offices) prior to their departure to Japan to obtain a visa waiver registration certificate. Registration validity is three years or until the passport expires, whichever comes first. If approved, travellers will receive a visa waiver registration certificate, which allows nationals of Qatar to travel to Japan for a maximum stay of 30 days for Business or Tourism. Nationals of Qatar who do not possess an ePassport or travellers who wish to stay in Japan for more than 30 days need to obtain a visa. The visa is typically a stamp or sticker added to the passport. Travellers must obtain this visa from a local embassy, consulate or visa center before travelling.