Isekai Quartet (異世界かるてっと, Isekai Karutetto) is a Japanese anime series that serves as a chibi-style crossover between the series KonoSuba, Overlord, Re:Zero − Starting Life in Another World, Saga of Tanya the Evil, The Rising of the Shield Hero, Cautious Hero and recently The Eminence in Shadow, all published by Kadokawa Corporation. It first aired on the 9th April 2019. Six different fantasy worlds collide when their inhabitants are transported into a shared dimension where they must attend school together, resulting in chaotic hijinks. Maybe if they make friends to reach other, respect, rival's, or work together.

Characters from Konosuba: Satou, Aqua, Darkness, Megumin, Chomusuke, Yunyun, and Vanir, Chris, and Wiz.
Characters from Overlord: Ainz, Albedo, Shalltear, Demiurge, Cocytus, Aura, Mare, Sebas, Yuri, Lupusregina, Solution, Narberal, CZ2128, and Entoma.
Characters from Re:Zero: Subaru, Emilia, Rem, Ram, Beatrice, Puck, Roswaal, Reinhard, Julius, Felt, Wilhelm, Otto(New), and Garfiel(New).
Characters from Saga of Tanya the Evil: Tanya, Viktoriya, Matheus, Rhiner, Vooren, Wilibald, Kurt, and Erich.
Characters from The Rising of the Shield Hero: Naofumi, Raphtalia, Filo, and Kitamura(New).

Character from Cautious Hero: Seiya, and Ristarte.
Characters from The Eminence in Shadow(New): Cid (Shadow), Alpha, Beta, Gamma, Delta, Epsilon, Zeta, and Eta.

• [Special] That Time I Got Reincarnated as a Slime(New): Rimuru, Benimaru, Shuna, and Shion.

The Roles and Class: (Class Room for the characters):

Class 1: Reinhard, Julius, Felt, Chris/Eris, Yuri, Lupusregina, Solution, Narberal, CZ2128, Entoma, Naofumi, Raphtalia, Filo, Cid, Alpha, Beta, Gamma, Delta, Epsilon, Zeta, Eta, and \"You\"(Scenario 4).

Class 2: Kazuma, Aqua, Darkness, Megumin and Chomusuke, Tanya, Viktoriya, Matheus, Rhiner, Vooren, Wilibald, Ainz, Albedo, Shalltear, Demiurge, Cocytus, Aura, Mare, Subaru, Emilia, Rem, Ram, Beatrice, Puck Otto(New), Garfiel(New). and \"You\".

(Special in Class 2): Rimuru, Benimaru, Shuna, and Shion.

Class 3: Yunyun, Kitamura(New), and \"You\"(Scenario 5).

(Assign Roles for the characters):

School Nurse: Wiz.

Teachers: Roswaal, Vanir, and Eric.

Principle: Kurt.

School Janitor: Sebas, and Wilhelm.

(Student with Committee for the characters):

Students from Class 2 and Health Commitee: Rem, and Shalltear.

Students from Class 2 and Library Commitee: Beatrice, and Mare.

Students from Class 2 and Animal Care Commitee: Aura, Subaru, and Mare.

Students from Class 2 and Disciplinary Committee: Kazuma, Tanya, and Demiurge.

Students from Class 2 and Gym Committee: Cocytus, Darkness, Weiss, Viktoriya, Koenig, and Rhiner.

SCENARIO'S LIST

#1: Your Own

#2: School Event

#3: New Student for Class 1

#4: New Student for Class 2

#5: New Student for Class 3

#6: Class 2 the Special Students

(I recommend using a Proxy to get better experience on this one.)

(This is my first time making one, still need to get a hang of making a character's, and I don't know if there is copyright to this 😅. And don't mind about the first message, I'm suck at grammar.)

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@Rare-On