The most common and most likely answer to this crossword clue is the 3 letter word OBI
I've seen this crossword clue in Independent
O
B
I
More clues leading to the result OBI
- Witchcraft needs redbreast with wings plucked off
- Witchcraft portrayed by Holbein regularly
- Broad sash — old one worn by bishop
- Sash round one that can go either way
- Sash for brim, odd bits trimmed off
- Passed on one’s charm
- Sash originally bought in old India
- Charm of Japanese attire
- Sorcery using bird with wings cut off
- Sash of brown, indigo tops
Buddy explains!

The straight part
We know that "Magic/sash from Tokyo" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case magic/sash from tokyo = obi.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does OBI mean?
OBI noun- A sash worn with a kimono.
- A strip of paper looped around a book or other product.
- A form of folk magic, medicine or witchcraft originating in Africa and practised in parts of the Caribbean.
- A magician or witch doctor of the magic craft.
- A spell performed in the practice of the magic craft; an item associated with such a spell.