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Going Back and Forth Between Earth and The Other World with Space Time Magic
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Going Back and Forth Between Earth and The Other World with Space Time Magic

Jikuu Mahou de Isekai to Chikyuu wo Ittarikitari, 時空魔法で異世界と地球を行ったり来たり
Native Language Japanese
Released 2015
Author
Original Ch.: 428
Translated Ch.: 380
Rank: #164
Last Update: January 6, 2026
Original Pub.: Futabasha, Syosetu
View: ? Views
6.4

Going Back and Forth Between Earth and The Other World with Space Time Magic is a popular novel that blends Fantasy, Harem, Shounen and more. Written by the author Katsu. 383 chapters have been translated, and translation of other chapters is in progress.

Synopsis

Though he received the skills necessary to teleport across worlds, the king who performed the summoning ritual attempted to trick him into wearing a s*avery collar, this annoyed him so he kidnapped the princess and returned to Earth.

While traveling between worlds with the skills he received, together with the kidnapped Princess and his little sister, they lived happily ever after?

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WebNovelDB Review

7 /10
A traditional, tongue-in-cheek Isekai, very much aware of and playing off the genre’s traditional power fantasy foundations. *Going Back and Forth Between Earth and The Other World with Space Time Magic* delivers exactly what the title promises. The narrative is purely a stress-free, entertaining read, following the adventures of a smart protagonist who dishes out the 'summoned hero' concept the moment he arrives. He doesn’t act like a hero, he kidnaps the princess and relies on the magic and technology of two different dimensions to create a comfortable, modern lifestyle for himself. The wish-fulfillment entertainment lies purely in watching the well-adjusted main character use the most obvious, logical advantages he’s got over the competition.
WebNovelDB Team

Key Information

Main Characters: Mitsuru (the pragmatic protagonist with space-time magic), Princess Ria (the kidnapped royal who becomes central to his new life), His Little Sister (his anchor to normal life on Earth; specific name not widely confirmed in translations).
Power System: The protagonist's only skill is "Space-Time Magic" allowing instant travel between modern Earth and a standard medieval fantasy world. The "system" is one of asymmetric advantage: using Earth's knowledge and resources to solve fantasy-world problems, and vice-versa.
Themes: Rejecting the "Hero" Role, Modern Knowledge as Power, Found Family & Comfort, Cozy Living Across Worlds, Anti-Slavery & Autonomy.

Reading Progress

Not Started Chapters: 0 Rating: -

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