The Eris side story Chapter 1 is out now on Gangan Online : r/mushokutensei

SF & Fantasy Manga – 2 Label_Gangan Comics UP! – Japanese Book Store

A new Mushoku Tensei spin-off manga series titled Mushoku no Tensei - Eris Gaiden by Okano Yuu & Higake Take based on Eris when she separated from Rudeus Start on Gangan Online

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SortieManga - Email alerts of manga releases

Mushoku Tensei Anthology: Eris' Side ch1 : r/mushokutensei

Eris Gaiden new chapter : r/mushokutensei

manga the week of - Manga Bookshelf

SF & Fantasy Manga – 3 Author_Rifujin na Magonote – Japanese Book Store

SF & Fantasy Manga – 2 Label_Gangan Comics UP! – Japanese Book Store

ComicBookAndAnimeNews@ ANIME AND MANGA WEEKEND NEWS FOR 11/12-14/21 PART 2: DRAGON BALL, BARUTO, MY HERO, ONE PIECE, FUNIMATION, AND MORE

The Morose Mononokean - Turkcewiki.org

Read Mushoku no Tensei - Eris Gaiden Chapter 1.full-eng-li Online

DISC] Mushoku Tensei Eris Gaiden - Ch1.1 : r/manga

SF & Fantasy Manga – 2 Label_Gangan Comics UP! – Page 2 – Japanese Book Store