Join the Fight! Transfer Student

'''Join the Fight! Transfer Student' (参戦！てんこうせい, Sansen! Ten Kōsei) is the first episode of the second season of Isekai Quartet'' and thirteenth episode of the full series overall. It aired on January 14, 2020.

Summary
The students have now finally settled into their new lives, but a new student has come to the school, and his name is… "Shield"?

Trivia

 * The opening theme of Isekai Quartet 2 was used as the closing theme for this episode.
 * Sebas Tian and Wilhelm act as staff at the School as groundskeepers.
 * As a connection to the first episode of Isekai Quartet overall, there was a view of Class 2 from the perspective of a newcomer standing in the classroom's doorway. Back then, it was Subaru Natsuki. In this episode, it was Naofumi Iwatani.
 * As a connection to Season 1 Episode 07, "slow your role" had been spoken by a teenager to cease hostility.  Back then, Subaru Natsuki reminded Rem that Roswaal told them not to start fights after she learned that the boy was gnawed on by a large hamster.  In this episode, Kazuma Sato talked one of the three newcomers Raphtalia out of attacking Ainz Ooal Gown whom he vouched for.
 * Wilhelm comparing Naofumi with his younger self is a reference to the fact that the younger Wilhelm van Astrea (from Re:Zero) and Naofumi Iwatani (from The Rising of the Shield Hero) are voiced by Kaito Ishikawa in the Japanese version and (coincidentally) Billy Kametz in the English dub.