This is isekai quartet in my version. If you don't know what is isekai quartet, well, it is an anime crossover of four animes (Re:zero, Konosuba, Overlord and Youjo Senki). You might notice that all the animes are isekai genre (which is why the name is isekai quartet). Now my story is very different than the original one (you'll know the difference when you read the story). The begining was the same. Ainz (from Overlord) accidentally stepped on a button and got transported to another world with his guardians, Megumin (from Konosuba) pressed a button and Kazuma (also from Konosuba) and his party got transported to another world, and Tanya pressed the button as well. But Re:zero! I will change the reason why they got transported since it was never shown how did they got transported. Also please note that there might be more characters that are from another isekai anime other from the main four. So hope you enjoy. Note: I DO NOT own Isekai Quartet.