Credit card transfer from Japan to India

I am planning to leave Japan soon. So I need to cancel my credit card accounts. Since, I have no credit score in India, so it will be difficult to get a credit card immediately. Therefore, I was thinking to use one of my Japanese credit cards (MUFG/SAISON Masted card) in my home country, India.

My question is can I change the attached bank account of this Japanese credit card to my Indian bank account?

Read the terms of your credit card (to which you have agreed when you got it). For starters, it very probably requires Japanese residency, so you cannot use it after you leave Japan.

Changing account won't work, the best you can do it keep some cash in your account so that the payment can be deduced form bank account
Or find a way to transfer into Japanese account from India