Are there oel manga in japan?

Question:

Answer:

OEL means Original English Language manga.

If you're asking if they are created there, then the answer would be no because this term is currently used to categorize manga that is produced outside of Japan.

If you're asking if any OEL manga produced in the US and sold in Japan, I know of at least one title (Svetlana Chmakova's Dramacon) that has been licensed and sold in other countries (including Japan.)

Hope this answers your question!