Isekai Mahou wa Okureteru! Gaiden (WN)

• Author: Gamei Hitsuji
• Genres: Dị Giới, Fantasy Phương Tây, Xuyên Không
• Status: Completed
• Chapters: 5
• Rating: ★ 4.1 / 5
• Published: 2026-10-05

A Different Side of the Sorcerer

This bite-sized 5-chapter side story offers a unique glimpse into the protagonist's life back on Earth. Rather than dwelling on the usual summoning antics in another world, it explores the day-to-day reality of a modern magician wielding serious power in his home dimension.

Using a real-world setting perfectly highlights the contrast with the typical hero tropes. It becomes crystal clear why he's so desperate to return home instead of wasting time playing savior against some random Demon Lord.

Character Beats and Magic Systems

Our lead, Suimei Yakagi, is a high schooler who also happens to be a genuine modern magician. Calm, logical, and ruthlessly pragmatic, he approaches the mystic arts with the analytical eye of a true scholar.

Hardened by the brutal training of his father from the Greed of Ten, he tends to be a bit too humble. However, his combat skills and high-tier spells like Star Dropper absolutely eclipse the primitive another world magic, making stuff like white fire magic look like amateur hour.

Suimei’s Social Circle

The dynamics between the protagonist and his companions are well-sketched despite the short runtime. He was summoned alongside his best friends, Reiji Shana and Mizuki Anō, creating a sharp contrast between the 'hero' perspective and the guy who's just an outsider looking in.

The cast from the new world, including Felmenia Stingray, Lefille Grakis, and Lilliana Zandyke, also adds depth to the roster. Among them, Felmenia Stingray is the one who likely caught feelings first, which fits right into the harem trajectory of the main series.

The Highlights

• Fleshes out the lead’s cunning, logical nature as a modern magician.
• Provides a visual comparison of how advanced modern magic is over other systems.
• Gives us more lore on his family background and the influence of his father in the Greed of Ten.
• Short, punchy, and perfect for a quick change of pace.

The Downsides

• At only 5 chapters, it’s too short to dive into every nook and cranny.
• You really need to have read the main series to fully grasp the context and character ties.
• The harem elements and allies are more of a cameo; they don't get much room to shine.

Community Feedback

• Novel Updates: 4.1/5.0 (32 votes, checked 05/10/2026)
• Goodreads: 3.98/5 (802 Ratings for the main series, checked 05/10/2026)

Overall, readers appreciate the smart, scholarly vibe and the razor-sharp magical logic the protagonist brings to the table.

The Final Verdict

This side story does its job well, offering a deeper look into the hero's psyche and the roots of his power. It clearly draws a line between a genuine modern magician and your average isekai protagonist.

The Bottom Line: If you’re a fan of pragmatic leads who treat magic like a science to be mastered rather than a miracle, this is well worth the dive.

Tags: side story, modern magic, suimei yakagi