Yahoo! JAPAN: How to log in again

https://login.yahoo.co.jp/config/login?.src=www&.done=https://www.yahoo.co.jp
If you are worried about click, search with the word "yahoo japan"

Access Yahoo! JAPAN home page.
https://www.yahoo.co.jp/
japan → yahoo.co.jp
america → yahoo.com

ログイン＝log in

Enter your information (e-mail address or Yahoo japan ID or tel number,password)
ログインしたままにする＝Stay logged in