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

Author Tobirano
Illustrated by Mai Murasaki
Paperback
5"W x 7-1/8"H | 13 oz | 48 per carton
On sale Jan 20, 2026 | 320 Pages | 9798895617496
Rated T+

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 complicated. Manga also from Seven Seas—and don't miss the anime!

Marie has always been an afterthought. Her parents treat her like a servant, and her flawless older sister, Anastasia, is the family's shining star. Even at Marie’s own birthday party, all eyes are on Anastasia—so much so that no one notices when Marie sneaks away.

But in the quiet of the evening, she has a chance encounter with a captivating man with striking green eyes: Count Kryos. Their brief meeting feels like a dream… until reality comes crashing back. Soon after, a marriage proposal arrives from the count—for Anastasia, of course.

Except… something doesn’t add up. The gown that arrives with the proposal? It’s clearly made for Marie. Could there be a mistake? Or is this the start of an unexpected love story?
Tobirano is a novelist in Japan. Betrothed to My Sister's Ex is their first series to be published in English.

Mai Murasaki is an artist in Japan. They are know for their work on Villainous Daughter Aims for the Last Boss and Betrothed to My Sister's Ex.
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About

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 complicated. Manga also from Seven Seas—and don't miss the anime!

Marie has always been an afterthought. Her parents treat her like a servant, and her flawless older sister, Anastasia, is the family's shining star. Even at Marie’s own birthday party, all eyes are on Anastasia—so much so that no one notices when Marie sneaks away.

But in the quiet of the evening, she has a chance encounter with a captivating man with striking green eyes: Count Kryos. Their brief meeting feels like a dream… until reality comes crashing back. Soon after, a marriage proposal arrives from the count—for Anastasia, of course.

Except… something doesn’t add up. The gown that arrives with the proposal? It’s clearly made for Marie. Could there be a mistake? Or is this the start of an unexpected love story?

Creators

Tobirano is a novelist in Japan. Betrothed to My Sister's Ex is their first series to be published in English.

Mai Murasaki is an artist in Japan. They are know for their work on Villainous Daughter Aims for the Last Boss and Betrothed to My Sister's Ex.
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