So if you’d rather keep the SSL function and not choose an entirely custom domain, you can still choose to customize your subdomain on AmebaOwnd and retain https.
You can choose from any of the following domains for your custom domain. Keep in mind that you can only make this switch once.
amebaownd.com, therestaurant.jp, shopinfo.jp, storeinfo.jp, theblog.jp, themedia.jp, and localinfo.jp.
Also bare in mind that the trade off for using a subdomain of AmebaOwnd is that in Google search console you would be able to specify the locale or geotarget to specific countries because your on a .jp domain, as opposed to a custom domain you can but you won’t have https.