The Twitter account of the anime "Isekai Quartet" has announced that the second season of this crossover comedy will be present in January 2020.
ファン感謝イベントにお越しいただいた皆さま、ありがとうございました！— 『異世界かるてっと』公式 (@isekai_quartet) October 5, 2019
スペシャル朗読劇「放送！ひるやすみ」、いかがでしたか？キャスト陣の熱演に感謝！！
「異世界かるてっと2」は来年1月より放送スタートです！これからも応援のほど、よろしくお願いいたします！！#いせかる #異世界かるてっと pic.twitter.com/FbicVFbvNS
It was also confirmed that the Shield Hero series will be present this new season.
Sinopsis:
A button appears out of nowhere. There are no signs not to suppress it ... so the solution is unquestionable right? Is it a trap or a start of something new and interesting? The crew from Re: Zero, Overlord, KONOSUBA, and Youjo Senki will know where they are going from their world to another world and stranded in a ... class ?! Watch the funny mess they will face in a collection of short stories!
His first season began airing on April 9, 2019. Minoru Ashina (Overlord) got the role of a scriptman as well as the director of this anime. Minoru Takehara acts as a character designer and animation director. PuYUKAI Studio became the animation production studio.
Source: Twitter