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Seas we wish upon
Two years have passed since Achille and Amphi, a promising prince and a notorious pirate, fell in love across the ocean. Two years of travelling the corners of the world, uncovering regalias of history in hidden tombs, and dancing beneath the stars. But their peaceful existence is interrupted by an urgent letter from Achille’s sister, now Queen of Sicily. Achille and Amphi immediately set sail for the Mediterranian island, only to be sent on a quest for a treasure no man has ever seen—Amphitrete’s lost tiara, the Treasure of all Seven Seas. Lost since the war with Olympus thousands of years ago.
A treasure that has claimed lives for centuries.
A treasure Amphi simply cannot resist.
But the voyage is not unhazardous. Also coming for Amphitrete’s magical tiara is Captain Saoirse O’Dwyer: a challenger for Amphi’s title as the most feared woman in the world. As her crew sweeps through the world like ghosts, killing everything in their way, even Captain Coltello herself starts to doubt.
The journey is dangerous and treacherous, and the crew of Marie Antoinette begins to wonder if love is not a vigour, but a weakness after all.
A treasure that has claimed lives for centuries.
A treasure Amphi simply cannot resist.
But the voyage is not unhazardous. Also coming for Amphitrete’s magical tiara is Captain Saoirse O’Dwyer: a challenger for Amphi’s title as the most feared woman in the world. As her crew sweeps through the world like ghosts, killing everything in their way, even Captain Coltello herself starts to doubt.
The journey is dangerous and treacherous, and the crew of Marie Antoinette begins to wonder if love is not a vigour, but a weakness after all.
475 pages, Paperback
First published February 1, 2025
2 people are currently reading
12 people want to read
About the author
Celia Östergaard
5 books215 followersCelia Linn Serafia Östergaard was born and raised in Karlskrona, Sweden. She read her first book at the age of five and wrote her first short-story in English at ten. She has been collecting books since the age of twelve. Celia loves history just as much as she loves music, animals and spending time with her family. After three years of social studies with an international profile, she studies history and literature at Uppsala University.
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Displaying 1 - 2 of 2 reviews
January 9, 2025
My third child, and the sequal to Stars we're made of. I think this is my best work yet, and I can't wait for it to be released into the world <3
April 8, 2025
Okay. So. Seas We Wish Upon absolutely wrecked me—in the best way.
I liked the first book, but this one? I loved.
It’s one of those sequels that completely opens the door to more: more depth, more stakes, more emotion, and more time with the characters you’ve already grown attached to. It took everything that made the first book good and just amplified it.
The story kicks off with a time skip of two years, which I actually really liked. It gave space for some things to settle off-page, and now that Amphi and Achille are married, there’s a sense of stability between them—which means this book isn’t just about their romance anymore. Instead, it opens up the space for new adventures, new characters, and more crew-focused storytelling, which I adored.
Plot-wise, this one takes us on a whole new journey—complete with sea monsters, sirens, mermaids, and an undead pirate crew after the same cursed treasure. And somehow, it doesn’t feel like overkill! It’s just the right amount of magic, danger, and myth to keep the world interesting without losing that character-driven heart. I was honestly so into the treasure hunt arc, especially because it gave us more moments to see the crew working as a team.
Speaking of the crew… oh my stars. I didn’t think I could love them more than I did in book one, but now? They feel like real people to me. Like friends I’ve laughed with and cried with and sailed beside for months. Every one of them had their moment, and the new addition—Cathani—was so easy to love. She brought a fresh perspective and energy to the dynamic without ever feeling like she was just there to shake things up.
I also really appreciated how this book gave us more POVs from the crew. Since Amphi and Achille’s relationship is solid now, we get to shift our attention to others on board, and it just works. The shifting perspectives never felt confusing or random—it felt earned. These are characters we know now, and I was fully invested in their personal journeys.
As for Chiara… YES. I was so happy to get a bit more of her! She was one of those background characters from book one that left me super intrigued, and now that she’s a queen, I was hoping we’d see her rise. We got some good moments at the beginning and end, but honestly—I need more. Celia, if you ever see this… please give us a Chiara novella about her and Ronan falling in love. I’m begging.
Now, back to the heart of this book:
Achille continues to be the absolute best. He’s grown so much, but what I love is how he never lost who he was. He gave up being a prince and became a pirate, sure—but he never became cruel or cold or vengeful. He stayed Achille, the thoughtful, kind, emotionally grounded guy we met in book one, and it made him such a strong and steady presence throughout. A strong leader, truly.
I even grew more fond of Amphi this time around. She showed some softer sides after marrying Achille, and I appreciated seeing her complexity deepen. Her decisions still frustrated me here and there, but she felt more real this time.
And… okay. Let’s talk about that ending.
I was not ready. I didn’t see it coming. I had that moment of pure denial—you know the one where you reread the page like five times because you must have misunderstood? And then the reality sinks in and it’s like a punch to the chest. It was bittersweet, and painful, and caught me so off guard. And yet, somehow, it was the right ending. It stuck with me long after I closed the book.
One of the most beautiful things about this story is the theme that runs through it—how different people carry grief, how our pasts shape us, how healing can look a thousand different ways. Some characters move on quickly, some hold on forever, and neither way is treated as “wrong.” It’s so deeply human. I felt like I lived through this story with them.
In the end, Seas We Wish Upon is more than just a pirate fantasy. It’s a story about growth, loss, love, loyalty, and identity. It’s about who we become when we let others in, when we let go, when we dare to hope—even if it hurts.
I’m so incredibly happy I stuck with this series, and I honestly, if Celia decides to write another book, I cannot wait to see what she'll create.
The stars know, I’ll be there on deck.
I liked the first book, but this one? I loved.
It’s one of those sequels that completely opens the door to more: more depth, more stakes, more emotion, and more time with the characters you’ve already grown attached to. It took everything that made the first book good and just amplified it.
The story kicks off with a time skip of two years, which I actually really liked. It gave space for some things to settle off-page, and now that Amphi and Achille are married, there’s a sense of stability between them—which means this book isn’t just about their romance anymore. Instead, it opens up the space for new adventures, new characters, and more crew-focused storytelling, which I adored.
Plot-wise, this one takes us on a whole new journey—complete with sea monsters, sirens, mermaids, and an undead pirate crew after the same cursed treasure. And somehow, it doesn’t feel like overkill! It’s just the right amount of magic, danger, and myth to keep the world interesting without losing that character-driven heart. I was honestly so into the treasure hunt arc, especially because it gave us more moments to see the crew working as a team.
Speaking of the crew… oh my stars. I didn’t think I could love them more than I did in book one, but now? They feel like real people to me. Like friends I’ve laughed with and cried with and sailed beside for months. Every one of them had their moment, and the new addition—Cathani—was so easy to love. She brought a fresh perspective and energy to the dynamic without ever feeling like she was just there to shake things up.
I also really appreciated how this book gave us more POVs from the crew. Since Amphi and Achille’s relationship is solid now, we get to shift our attention to others on board, and it just works. The shifting perspectives never felt confusing or random—it felt earned. These are characters we know now, and I was fully invested in their personal journeys.
As for Chiara… YES. I was so happy to get a bit more of her! She was one of those background characters from book one that left me super intrigued, and now that she’s a queen, I was hoping we’d see her rise. We got some good moments at the beginning and end, but honestly—I need more. Celia, if you ever see this… please give us a Chiara novella about her and Ronan falling in love. I’m begging.
Now, back to the heart of this book:
Achille continues to be the absolute best. He’s grown so much, but what I love is how he never lost who he was. He gave up being a prince and became a pirate, sure—but he never became cruel or cold or vengeful. He stayed Achille, the thoughtful, kind, emotionally grounded guy we met in book one, and it made him such a strong and steady presence throughout. A strong leader, truly.
I even grew more fond of Amphi this time around. She showed some softer sides after marrying Achille, and I appreciated seeing her complexity deepen. Her decisions still frustrated me here and there, but she felt more real this time.
And… okay. Let’s talk about that ending.
I was not ready. I didn’t see it coming. I had that moment of pure denial—you know the one where you reread the page like five times because you must have misunderstood? And then the reality sinks in and it’s like a punch to the chest. It was bittersweet, and painful, and caught me so off guard. And yet, somehow, it was the right ending. It stuck with me long after I closed the book.
One of the most beautiful things about this story is the theme that runs through it—how different people carry grief, how our pasts shape us, how healing can look a thousand different ways. Some characters move on quickly, some hold on forever, and neither way is treated as “wrong.” It’s so deeply human. I felt like I lived through this story with them.
In the end, Seas We Wish Upon is more than just a pirate fantasy. It’s a story about growth, loss, love, loyalty, and identity. It’s about who we become when we let others in, when we let go, when we dare to hope—even if it hurts.
I’m so incredibly happy I stuck with this series, and I honestly, if Celia decides to write another book, I cannot wait to see what she'll create.
The stars know, I’ll be there on deck.
Displaying 1 - 2 of 2 reviews