Join In! Rivals.Roswaal announces a field day is coming and the winners will be allowed to return to their worlds. Subaru questions who the class could compete against since there are no other classes. Roswaal corrects him and much to the surprise of Class 2, reveals there's a Class 1 room down the hallway with additional characters from each individual worlds. After class, Subaru, Tanya and Ainz discuss the upcoming field day and the competing strengths of the students from Class 1. Kazuma, Aqua and Darkness discover Chris is a member of Class 1, and in addition to telling them that she has no control over their current situation, reveals to them that they cannot revive if they are killed in their current world...