Cocytus

* Based on the light novel series by the same name written by Maruyama Kugane and illustrated by So-Bin. When a popular MMORPG is scheduled to be shut down permanently, veteran player Momonga refuses to log out. As NPCs begin to develop personalities and minds of their own he decides to put his skills to use as the game’s new overlord. Source: crunchyroll

* Isekai Quartet is a crossover series featuring characters from popular "isekai" franchises illustrated in cute, superdeformed style. The button appeared out of nowhere. Was it a trap or the start of something new? The crews of Re:Zero, Overlord, Konosuba, and Saga of Tanya the Evil got stuck in another world’s class! Now, more new characters join the series, including Alpha…