Get product using SKU with respect to the store data

I use the core API /V1/products/:sku to get the product using the SKU.

for example, I have 2 stores, one in English and another in Japanese.
My API Endpoint is like
http://local.mystore.com/storefront/en-us/rest/V1/products/myproduct for the English store and
http://local.mystore.com/storefront/en-us/rest/V1/products/myproduct for the Japanese.

For both the API I am getting the same labels (in English) for the attributes but In my Admin I have different labels for the attribute in the store scope level and its works fine in the Magento pages but not in the API.

In this Function get() the $storeId is always null, I guess the problem is in this, if so please let me know How to send the store Id in this API to fix this issue.