Katsuyokei: Conjugation

Katsuyokei is a practice tool designed to turn Japanese conjugation into a reflex rather than a memorization task. The application covers essential verb classes including godan, ichidan, and irregulars, as well as both types of adjectives. Users can practice polite forms, negatives, past tense, te-forms, conditionals, and passive/causative variations through five distinct exercise modes including multiple choice and manual typing. The tool provides immediate feedback by showing the transformation logic when a mistake is made.