Betrothed to My Sister's Ex

Light Novel Vol. 1

Tobirano, Mai Murasaki

$35

Paperback

Forthcoming
Pre-Order now

QTY:

English

Seven Seas Entertainment, LLC
20 January 2026

Modern & contemporary fiction (post c 1945); Historical romance; Graphic novels: superheroes

Series: Betrothed to My Sister's Ex (Light Novel)

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!

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?

By: Tobirano
Illustrated by: Mai Murasaki
Imprint: Seven Seas Entertainment, LLC
Country of Publication: United States [Currently unable to ship to USA: see Shipping Info]
Volume: 1
Dimensions: Height: 181mm, Width: 127mm,
Weight: 369g
ISBN: 9798895617496
Series: Betrothed to My Sister's Ex (Light Novel)
Pages: 320
Publication Date: 20 January 2026
Audience: General/trade , ELT Advanced
Format: Paperback
Publisher's Status: Forthcoming

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.