Rules you pay for not knowing —
as tools and games.

Answer chat questions and a draft inheritance chart, family tree or genogram builds itself. For inheritance procedures, family-court matters like guardianship and mediation, or just organizing your relatives. PNG/PDF export, file save, and a completeness checker.

Found money, verbal promises, badmouthing online — some of it is illegal. From the constitution to labour law and famous court cases, all in everyday examples. Answer a question right twice and it graduates; then review only your weak spots.

Updated for Japan's April 2026 bicycle ticket system — phone-while-cycling costs ¥12,000. Pedestrians, bikes, cars, licences and road signs, with the fine amounts and the reasons behind them. Plus a daily 'I followed the rules today' self-stamp.

Not illegal — but is it OK? Gift money, calendar superstitions, escalators, garbage rules and social media: a quiz that draws the line between law and manners. Some acts actually break Japan's Minor Offences Act. With a daily 'I minded my manners today' self-stamp.

One step beyond the Traffic Rules Quiz. How to tell confusing road signs apart, the learner's and full license exam formats, and the legal changes taking effect in 2026. If you see "always" or "never," be suspicious — a quiz for beating the trick questions on Japan's written driving exam.

From New Year's Day, Setsubun, Hinamatsuri, and Children's Day to Mother's Day, Obon, the harvest moon, Halloween, Shichi-Go-San, and Christmas. A quiz on the origins and etiquette of Japan's year-round events, full of trivia you never knew.

One step beyond "Manners Borderline." Official paperwork when you move house, how to reply to invitations, chopstick taboos, why you never step on the edge of a tatami mat, and the art of exchanging business cards. Behind almost every rule of etiquette, there's a reason.

From the bar exam and preliminary exam to gyoseishoshi, judicial scrivener, licensed tax accountant, labor and social security attorney, and patent attorney. Learn the exam formats, subjects, pass rates, and difficulty of six of Japan's national legal qualifications through quizzes — a gateway for anyone eyeing a career in law.