College student Yaki Hiroshi has been living a mundane life, when suddenly luck struck and some guy playing a mobile game bumped into him, causing him to fall down - right in front of a train! He got sent to the world Gezeruna instead, where a beautiful girl named Ulfina needed him. To die, that is, to save the world!
That which must never be done - Otherworldly Summons It is also Known as: 絶対にヤッてはいけない異世界召喚, Zettai ni yatte ha ikenai Isekai Shoukan
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Top Manga Like That which must never be done - Otherworldly Summons (Zettai ni Yatte wa Ikenai Isekai Shoukan) [2026 List]
1. Isekai Meikyuu de Harem wo
A man was about to commit suicide and decides to search for a way to die in the internet, but then he found an odd site that asked a lot of questions and had a point based system that allows you to create skills and abilities for a character. He took interest in it and when he finished setting his character he was asked "You will now be transported to a world with the settings you choose, coming back is not possible, do you still accept." Then, without thinking much of it, he pressed "Yes," and he found himself in another world with the skills and abilities he choose to have...
Isekai Meikyuu de Harem wo is currently publishing and has Chapters. It is also Known as: 異世界迷宮でハーレムを, A Harem in the Fantasy World Dungeon, Isekai Meikyuu de Harem o, Slave Harem in the Labyrinth of the Other World, Başka Dünyada ki Bir Labirentte Harem Kurmak, 在异世界迷宫开后宫, 异世界迷宫里的后宫生活, Fantazi Dünyası Zindanında Bir Harem, Getting a Harem in an Otherworldly Labyrinth
