A breakup plan. A “Queen of Hearts” noble. And the hired heroine who is absolutely, spectacularly the worst possible choice. 😅💘 Joō Heika no Tokumei Reijō Lilith Valentine（女王陛下の特命令嬢リリス・バレンタイン）Vol. 1 hits Japan on January 14, 2026—here’s the release info and the story hook that sells the chaos.
Release date, price, format, and ISBN at a glance
Lilith Valentine Vol. 1 is scheduled to release on January 14, 2026 in Japan. The list price is 792 yen (tax included) in B6 format, with ISBN 978-4-7992-2125-9. If you’re searching across multiple stores, using the ISBN is the fastest way to make sure you’ve got the right volume.
The “Queen of Hearts” wants a breakup on purpose
The story centers on Katerina, a marquis’s daughter so proud she’s nicknamed the “Queen of Hearts.” Stuck in a strained relationship with her fiancé, Prince Michel, she doesn’t just hope things work out—she decides to force a classic romance-novel outcome: a dramatic engagement breakup.
Her solution is as bold as it is risky: recruit a “heroine” to charm the prince away and trigger the breakup from the outside, like a sabotage mission dressed up as romance.
Then she hires Lilith… and everything derails
Katerina’s scouting succeeds—she does find someone. The problem is that the recruit, Lilith Valentine, isn’t a cool strategist or a perfect temptress. She’s a walking wildcard with unstoppable confidence and dangerously low common sense, turning a clean plan into one escalating incident after another.
That’s the comedic core: this is less a triangle and more a showdown between careful planning and the one variable you can’t control—an “assistant” who keeps helping in ways that make things worse.
Official pages for previews and volume details
Because the full Japanese title is famously long, the easiest way to confirm you’re on the correct listing is the official volume page: Official volume details and previews.
If you want to read digitally and explore similar romance/fantasy titles from the same ecosystem, you can also browse: KimiComi.
Final reminder before release day
If you’re in the mood for an engagement-breakup romcom that goes off the rails on page one, Vol. 1 is an easy shelf add. Check the official listing for the latest info, sample the preview, and prepare for maximum “this was not the plan” energy. 💥📚
©やまだ亜麻©山崎響／キルタイムコミュニケーション
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