Betrothed to My Sister's Ex (Light Novel) Books in Order

Illustrated by Mai Murasaki

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The Betrothed to My Sister's Ex (Light Novel) series by Tobirano includes 3 books published in 2026.

✓ All 3 books verified against the publisher's official series list.

Publication order

In the order the books were originally released.

  1. Cover of Betrothed to My Sister's Ex (Light Novel) Vol. 1

    Betrothed to My Sister's Ex (Light Novel) Vol. 1

    2026 · Tobirano

    A woman who’s lived her life in the shadow of her sister must suddenly take her place after a tragic accident—but her life is about to get way more…

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  2. Cover of Betrothed to My Sister's Ex (Light Novel) Vol. 2

    Betrothed to My Sister's Ex (Light Novel) Vol. 2

    2026 · Tobirano

    A DREAM COME TRUE, BUT... Marie has never been known as a beauty. She’s as tall as a man, has unruly red hair, and only ever wears rags. She could…

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  3. Cover of Betrothed to My Sister's Ex (Light Novel) Vol. 3

    Betrothed to My Sister's Ex (Light Novel) Vol. 3

    2026 · Tobirano

    FIRST COMES LOVE, THEN COMES MARR—NOT SO FAST!! Marie is now living a life she’s only ever dreamed of. Thanks to the love of Kyros, the richest man…

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Cover of Betrothed to My Sister's Ex (Light Novel) Vol. 4

Betrothed to My Sister's Ex (Light Novel) Vol. 4📅 Expected Jan 12, 2027

Tobirano; Illustrated by Mai Murasaki

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Pre-order on Amazon
Cover of Betrothed to My Sister's Ex (Light Novel) Vol. 5

Betrothed to My Sister's Ex (Light Novel) Vol. 5📅 Expected May 11, 2027

Tobirano; Illustrated by Mai Murasaki

Read more →
Pre-order on Amazon

✓ = numbering verified against the publisher's official series list.

📅 = publisher-announced release dates; subject to change. All upcoming releases →

Frequently asked questions

What order should I read the Betrothed to My Sister's Ex (Light Novel) books in?

Read them in publication order, starting with “Betrothed to My Sister's Ex (Light Novel) Vol. 1”. Start with “Betrothed to My Sister's Ex (Light Novel) Vol. 1.”

How many books are in the Betrothed to My Sister's Ex (Light Novel) series?

We list 3 books by Tobirano , published in 2026.

When is the next Betrothed to My Sister's Ex (Light Novel) book released?

The next book is “Betrothed to My Sister's Ex (Light Novel) Vol. 4”, book 4 in the series, expected Jan 12, 2027. That is the publisher's announced date and can change; this page updates when it does.

Where can I buy the Betrothed to My Sister's Ex (Light Novel) books?

Each title above links to Amazon. See our affiliate disclosure.

Reading order compiled from author/publisher guidance and verified bibliographic data. Spotted a wrong order, a missing book, or any other mistake? and we'll correct it.