I was told about a high quality animated YouTube channel called the Bible Project.
It explains each letter of the Bible in an easy to understand and systematic way with beautiful animations. It seems to have been originally created in English-speaking countries, but there are now about 10 Japanese versions available.
I think it will help you understand the Bible if you watch it along with Bible reading. I also recommend it for Sunday school materials, Bible studies, and seekers.
I’m grateful for the wonderful content that’s out there, called “Reading Drama Bible”!