Genndy Tartakovsky's Primal. Might not be Japanese, but it's some of the best animated storytelling ever, and it's all done without a single word being spoken. Honestly, I can't recommend this one enough.
Beastars. It's kind of a more serious, adult version of Zootopia (though it takes place in a kind of college), and deals more closely with conflict of instincts.
Genndy Tartakovsky's Primal. Might not be Japanese, but it's some of the best animated storytelling ever, and it's all done without a single word being spoken. Honestly, I can't recommend this one enough.
Beastars. It's kind of a more serious, adult version of Zootopia (though it takes place in a kind of college), and deals more closely with conflict of instincts.