TheFork users who ate in Barentin have said really good things about J Sushi, Koto-Sushi and Fuzao. Maybe you should give them a try!
Some of the more popular Sushi restaurants that offer vegetarian options on their menu in Barentin according to TheFork users include:
J Sushi, with a 9.7 rating
Koto-Sushi, with a 8.3 rating
Fuzao, with a 9.3 rating