Beware of Spoofing and Phishing Scams impersonating muu muu domain and GMO Internet Group
There appears to be an impersonation/phishing scam impersonating MuuMuu domain and GMO Internet Group.
Any email with the subject line "You need to renew your service... (サービスを更新する必要があります.!)" is a phishing email and should be deleted.
! Update
I found another subject that is "Your domain name domain.com has expired... (ドメイン名domain.comの有効期限が切れました.)". There may be several others.
The design of the spoof site is quite similar to the official site.
Here is the fake page.
The design of the fake page uses the design of X server and MuuMuu Domain.

Homepage of the official X server site

HomeTop page of Mood Domain's official website
There appear to be multiple designs and domains for the pages that open when you click on the links in the emails.
If you click on a link in a phishing email, check to see if the domain (address) looks suspicious or if there is anything strange about the page design.
Especially, it very unusual that you will be asked to enter your credit card information on your landing page. If you are directed to such a page, close it immediately.
It was in my spam folder but I happened to click without reading it carefully.