Hello, welcome to Letter Tag - Japan X Rest of the World.
I am typing this Letter Tag explanation in English first, so I believe everyone in the world can understand how this tag works.
This letter tag is for between people in Japan and in other countries who would like to send a letter and receive one, per tag.
Firstly, please always check the Postcrossing Postal Monitor for Japan’s postal situation to see if people in Japan can send airmails to your country now. Via Ship / Surface mails to some countries are possible but please keep in mind that it can take months for the envelope from Japan to arrive in your country. The risk for the envelope to be lost on the way could be higher than the ones sent via airmails. Also, there are some certain countries where people in Japan currently cannot send both airmails and Surface mails (via ship), such as Russia, Brazil, some South American Countries, some African countries, etc.
Please, always check this site before you join this tag :
https://www.postcrossing.com/postal-monitor
You can write on any paper you can have on hand - it does not necessarily have to be fancy letter paper. What is important is what you write in the letter, not the letter paper itself. Please try to write the letter to members in Japan as legibly as possible. Some people in Japan cannot read cursive much, thank you for understanding.
You tag the person above you and mention 2 or 3 things (that are not so difficult or complicated) that you would especially like the sender to write about for you. And you also mention which language, English and / or in Japanese (only in Hiragana and/or Katakana or with Kanji / Chinese characters), you prefer, for example :
Tag xxxxxx
Please write me about :
- food in your country
- recommendation of where I should visit in your country
- your experience on Postcrossing, good or not
Please write me in English.
After your tag post, please do not forget to ask the address of the Japanese recipient above your post whom you tagged.
This tag is the repetition of the above. This letter tag goes like Japan → Rest of the World - > Japan → Rest of the World → Japan
Please have a good time interacting with Postcrossing members in Japan through a letter 
こんにちは、
お手紙タグ - 日本 X 海外 へようこそ。
このタグは、日本の方と海外の方が、お手紙をタグの度に、１通づつ送って、１通受け取る、というタグです。
便箋や封筒などは、どのような用紙でも良いかと思います。便箋でなくて、はがき数枚に書いていただいても構いません。
自身の上に書き込んでいる方をタグして、それから２つ３つ手紙にて書いていただきたい事柄を英語で投稿してください。その際、
どの言語でお手紙を受け取り希望かも書き添えてください。例えば、:
Tag xxxxx
Please write me about :
- food in your country
- recommendation of where I should visit in your country
- your experience on Postcrossing, good or not
Please write me in English or in Japanese (with Kanji)
という感じです。このタグは、この繰り返しです。
タグの順番は、日本、海外、日本、海外、日本、海外、となります。
投稿を済ませた後、タグをした上の方（自身の上に書き込んでる海外の方)の住所をプライベート・メッセージにてお聞きして、
お手紙をその方に送ってください。一応参考までに、このサイトをご覧ください :
国・地域別の差出可否 日本郵便
https://www.post.japanpost.jp/int/information/overview.html
何か質問、他にご希望な事柄などありましたら、お気軽に私宛にメッセージ、または雑談スレッドにてお願いいたします。
それでは、皆さん、このお手紙タグをぜひ楽しんでください！
