Yotsuya Otsuka is the preparatory cram school in Japan for elementary school students.
According to PR-model, yotsuyaotsuka.com is ranked 107,952nd in multilingual Wikipedia, in particular this website is ranked 7,303rd in Japanese Wikipedia.
The website is placed before die-deutsche-buehne.de and after bhc.gov.pk in the BestRef global ranking of the most important sources of Wikipedia.