Complex sentence: Ryuk coaxes Light into testing it on a bully that is pestering Mia Sutton, a cheerleader and Light's classmate; the bully is decapitated in a freak accident shortly afterwards.
Split into simpler sentences: Ryuk coaxes Light into testing it on a bully who is pestering Mia Sutton, a cheerleader and Light's classmate. The bully is decapitated in a freak accident shortly afterwards.