In geno, there be a 1/3 chance kami will block the attack and sacrifice himself. Sherif will replace kami and attack you but is more cocky and thinks your not as big as a threat. so he allows you to have your turn and his defence decresses to 0. so when u hit the sherif you 1 shot him making it a 1 phase battle. Then in the last room you battle jillet.
credit to the whole scratchtale team.
