Summoned to a parallel fantasy world many times is a Manga/Manhwa/Manhua in english language, Comedy series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.cc fastest updating comic site. The Summary is

Guy’s whole class gets summoned to another word, except he’s the only who one was transferred to a different one. Just when he gets used to his new life, he gets summoned to another world again, and again.