Which prepaid sim card whilst in Japan?

Great article on prepaid sim card to use whilst in Japan... Sometime I wonder why we make our lives too complicated. Using mobile should not be as complicated at home and abroad!

日本の携帯事情は海外に比べるとややこしい。SIMカードをポンと取り換えるだけで済む国が多い中、いろいろ準備が必要な日本の携帯ご事情。海外から持ってきた携帯をシンプルに使えなくて、困った経験はよく耳にするし、私も経験済み。その問題解決に役立つ情報！

https://pretraveller.com/best-prepaid-data-sim-card-in-japan-for-tourists/?fbclid=IwAR1xUpwLYDXhyCBZIBRluq2LE_4qt0CY3KKI8Mk-rbuwPsluqRz9ieU0OYs&utm_campaign=japan_travel_planning&utm_content=pretraveller_%26_jtp_-_high_rotation_evergreen_articles&utm_medium=social&utm_source=facebook&utm_sq=fzxcafftbj

photo - thanks to: http://home.bt.com/tech-gadgets/phones-tablets/how-does-a-smartphone-sim-card-work-the-technology-behind-sim-cards-explained-11363967555573