Deadlock! Classmates

'''Deadlock! Classmates' (膠着！くらすめいと, Kōchaku! Kurasumeito) is the third episode of the first season of Isekai Quartet'' and third episode of the full series overall. It aired on April 23, 2019.

Plot
After Roswaal tells to the class not to do anything to that threatens their school life, Demiurge explains to the class that his belief is if they try and break any rules of school life, they would be hindering their opportunity to return to their respective worlds. The class is then presented with a talent show that'll happen in the upcoming days, where Subaru explains to his series' cast during lunch that he has a good talent planned. Meanwhile, Tanya is eating lunch with Viktoriya Ivanovna Serebryakov outside when she notices Ainz and starts to suspect he might be the accursed "Being X". When class resumes, she confronts him and demands that he meets her outside of class in park after school, which angers Albedo. The two instead agree to discuss the matter now at the park while Albedo is forced by another teacher, Erich von Rerugen, to remain in class.