Hi seob2012 I have 1 idea 
but I don’t know if it will work
Download Klaytn blockchain wallet 
Kaikas
Install… save Kaikas seed and password 
Export an Account Private Key
https://metamask.zendesk.com/hc/en-us/articles/360015289632-How-to-Export-an-Account-Private-Key
Add ETH private key to Kaikas wallet
