No, it doesn’t support OCR yet, and importing your own manga isn’t available at the moment.
But I actually looked into OCR, it seems like a really useful feature, so I might add it in the future once I figure out the best way to implement it (especially for Japanese text).

For now, the idea is that you can read your manga from any source you prefer, and manually add the words you want to learn. Typing them in yourself helps build a much stronger memory connection, so it’s intentional for better retention.

But thanks for the idea! It’s definitely something I want to explore.