Cathlyn is an anime writer with years of experience covering some of the biggest and most popular series of all time. She loves writing listicles, features, and query-based articles about all things ...

Suzail Ahmad is a GameRant writer from Kashmir. He has been a manga and gaming enthusiast for more than a decade. As an expert, he aims to provide an in-depth analysis of titles from both mediums.

The following contains spoilers from the Demon Slayer: Kimetsu no Yaiba manga or anime. Zenitsu and Kaigaku's rivalry stems from past bullying, betrayal, and their shared mentor's influence. Kaigaku ...