Bazewp.

The website content, including the title 'サクセスセミナー', menu items like 'コース', '小学生', '中学生', '高校生', '季節講習', and '夏期講習', along with the footer copyright, clearly identifies this as a Japanese educational institution offering courses and seminars. The language is Japanese (ja-JP). The color palette features a prominent blue (#4693f5) likely used for branding, complemented by dark grays for text and a light gray background, which are common in educational or corporate website designs.