Apex domains cannot have CNAME records.
Question and response
Question
dig makeshop.jp. NS
Answer
makeshop.jp. 5 NS ns-794.awsdns-35.net.
makeshop.jp. 5 NS ns-1143.awsdns-14.org.
makeshop.jp. 5 NS ns-1560.awsdns-03.co.uk.
makeshop.jp. 5 NS ns-178.awsdns-22.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0