Cassiopeia (Oc x James Potter)
- Reads 116
- Votes 0
- Parts 9
MatureOngoing22m
Last published Tue, May 26, 2026
Oc x James Potter
When Sirius Black's little sister finally comes to Hogwarts, suppressed feelings of guilt, anger and love come to the surface.
This is Cassiopeia.
All Rights Reserved
Join the largest storytelling communityGet personalized story recommendations, save your favourites to your library, and comment and vote to grow your community.
You may also like
𝐖𝐡𝐚𝐭𝐞𝐯𝐞𝐫 𝐈𝐭 𝐓𝐚𝐤𝐞𝐬 | 𝐑.𝐀.𝐁
"𝐈 𝐰𝐢𝐥𝐥 𝐬𝐚𝐯𝐞 𝐲𝐨𝐮, 𝐑𝐞𝐠𝐮𝐥𝐮𝐬 𝐁𝐥𝐚𝐜𝐤. 𝐖𝐡𝐚𝐭𝐞𝐯𝐞 𝐫 𝐢𝐭 𝐭𝐚𝐤𝐞𝐬." "𝐃𝐨𝐧'𝐭 𝐰𝐚𝐬𝐭𝐞 𝐲𝐨𝐮𝐫 𝐭𝐢𝐦𝐞, 𝐲𝐨𝐮 𝐜𝐚𝐧'𝐭 𝐬𝐚𝐯𝐞 𝐚 𝐝𝐞𝐚𝐝 𝐦𝐚𝐧." "𝐖𝐞𝐥𝐥, 𝐈 𝐠𝐮𝐞𝐬𝐬 𝐭𝐡𝐚𝐭 𝐦𝐞𝐚𝐧𝐬 𝐈'𝐥𝐥 𝐣𝐮𝐬𝐭 𝐡𝐚𝐯𝐞 𝐭𝐨 𝐭𝐫𝐲 𝐡𝐚𝐫𝐝𝐞𝐫 𝐭𝐡𝐞𝐧, 𝐰𝐨𝐧'𝐭 𝐈?"
Echoes Across Time | Marauders Era
Isabella Robert, a half-blood witch, was sorted into Gryffindor and spent her Hogwarts years nursing a quiet, unreturned love for James Potter. The heartbreak that followed marked her deeply, but life moved on. She slowly learned to heal, to love again, and spent years rebuilding the happiness she thought she'd never have. Just when it finally felt within reach, the war came. Now, dying amidst the chaos, she can't help but wonder if the universe ever meant for her to be happy at all.
devotion | regulus black
― "I love you more than life itself," ― Althea Potter had always been a light. Where James burned wild and reckless, she glowed warm and steady, drawing people in with her laughter, her kindness, and her stubborn belief that everyone carried a spark worth loving. She was the sister who brightened shadows, the girl who never let anyone feel unseen. Regulus Black, on the other hand, was born of shadows. Cold where she was warm, distant where she was tender, sharp where she was soft-he was a boy sculpted by duty, drowning beneath the weight of a name that demanded silence, obedience, sacrifice. They were opposites, orbiting each other in disdain. She saw him as cruel and unfeeling, and he saw her as naïve and foolish. Yet the world has a way of binding the unwilling, and war makes strange companions of enemies. Slowly, through whispered arguments and stolen glances, Althea discovered the boy beneath the mask, and Regulus found himself yearning for the light he had spent his life rejecting. But love in times of war is fragile. It does not always save. Sometimes it destroys, quietly, beautifully, tragically. And when the end came-as it always would-they both learned that hatred can turn to love, and love can burn into something fiercer still. Something unshakable. Something eternal. Something that could only be called devotion. ☽｡⋆Complete
𝕎𝕙𝕠 𝕀'𝕕 𝔹𝕖 | 𝐏𝐨𝐭𝐭𝐞𝐫 𝐒𝐢𝐬𝐭𝐞𝐫 𝐱 𝐒𝐢𝐫𝐢𝐮𝐬 𝐁𝐥𝐚𝐜𝐤
Highest Rank: - #1 PotterSister Juniper was a shining example of all the best attributes a woman could have which is why Sirius was so drawn to her and it wasn't because her brother was his best friend! As Sirius joined the Potter family, he woke up to a new feeling; love. Potter Sister x Sirius Black Love Story All rights reserved Started: Oct 2020 Finished : May 2021Complete
𝐛𝐮𝐫𝐧𝐢𝐧𝐠 𝐩𝐢𝐥𝐞 | 𝐣𝐩
❝ɪᴛ ɢᴏᴇꜱ ᴀʟʟ ᴍʏ ᴛʀᴏᴜʙʟᴇꜱ ᴏɴ ᴀ ʙᴜʀɴɪɴɢ ᴘɪʟᴇ ᴀʟʟ ʟɪᴛ ᴜᴘ ᴀɴᴅ ɪ ꜱᴛᴀʀᴛ ᴛᴏ ꜱᴍɪʟᴇ❞ 𝐢𝐧 𝐰𝐡𝐢𝐜𝐡 𝐞𝐥𝐥𝐚𝐝𝐨𝐫𝐚 𝐞𝐦𝐞𝐫𝐬𝐨𝐧 𝐬𝐭𝐚𝐫𝐭 𝐬 𝐡𝐞𝐫 𝐬𝐞𝐯𝐞𝐧𝐭𝐡 𝐲𝐞𝐚𝐫 𝐚𝐭 𝐡𝐨𝐠𝐰𝐚𝐫𝐭𝐬 - 𝐚𝐥𝐨𝐧𝐠 𝐰𝐢𝐭𝐡 𝐡𝐞𝐫 𝐞𝐱-𝐛𝐞𝐬𝐭 𝐟𝐫𝐢𝐞𝐧𝐝 𝐨𝐫 𝐢𝐧 𝐰𝐡𝐢𝐜𝐡 𝐣𝐚𝐦𝐞𝐬 𝐩𝐨𝐭𝐭𝐞𝐫 𝐟𝐢𝐧𝐚𝐥𝐥𝐲 𝐜𝐥𝐞𝐚𝐫𝐬 𝐭𝐡𝐞 𝐚𝐢𝐫 𝐰𝐢𝐭𝐡 𝐡𝐢𝐬 𝐞𝐱-𝐟𝐫𝐢𝐞𝐧𝐝 𝐚𝐟𝐭𝐞𝐫 𝐚𝐧 𝐚𝐫𝐠𝐮𝐦𝐞𝐧𝐭 𝐰𝐢𝐭𝐡 𝐡𝐢𝐬 𝐟𝐚𝐯𝐨𝐮𝐫𝐢𝐭𝐞 𝐰𝐞𝐫𝐞𝐰𝐨𝐥𝐟 disclaimer: i do not own any of the original harry potter characters, they belong to the author of harry potter. ⤷ i do not support jk rowling's disgusting transphobic viewsComplete
Mischief Managed | 𝘚𝘪𝘳𝘪𝘶𝘴 𝘉𝘭𝘢𝘤𝘬
{𝗕𝗼𝗼𝗸 𝟮} It all started with a kiss. Or better say, everything ended with a kiss. What Jenna Potter thought was going to lead her to a beautiful love story, quickly turned into a tragedy; only a week after Sirius Black stole her first kiss, Jenna caught him at school with another girl. Now, with her trust broken and her heart shattered, Jenna promises herself never to like another boy ever again. But little does she know that the universe has other plans for her. Not long after, she finds herself slowly falling for Remus Lupin. But with Sirius's feelings for her never truly gone, and her overprotective twin brother there to interfere in it all, Jenna finds her first four years at Hogwarts drowned in chaos. *** [Marauder's Era] [OC's age: 11-15]Complete
Eternal Sunshine - James Potter
In the halls of Hogwarts, where magic weaves its intricate tapestry of destiny, James Potter, renowned for his mischievous grin and untamed spirit, finds himself drawn to the enigmatic Emily Williams. Follow James and Emily as they must confront their deepest fears and fight for a love that transcends time and fate. For in each other's arms, they discover the magic of true love-a love that ignites the soul and echoes through eternity.Complete
Ink in Paper - Regulus Black
NOT FINISHED (STOPPED) WILL CONTINUE ONLY ON AO3 Luna Lupin came from a tumultous childhood filled with secrecy and a family haunted by the stigmatised illness of lycanthropy, thrown into a society that views her older brother, Remus, with suspcion and fear. She's used to being seen as a second option and afterthought. However, when the one person that she fancied, Sirius Black, breaks off the secret arrangement he had with her, Luna decides she's done with it. So it's through a plot of revenge that she finally approaches her Astronomy tutor, Regulus Black, for a fake relationship. Regulus Black, the one who had been born the spare, had been suddenly been thrown into the spotlight when his brother Sirius ran away, leaving him to learn to be the Heir of the House alone. Keen to find a way to hurt his brother, he accepts the most ludicrous plot. But if he is to do it, he's to do it right. Regulus and Luna find themselves swimming in deeper waters than they expected, esnared in a web of lies, secrets and painful truths, but they are not to let go of one another. WARNING: This story may be uncomfortable for some readers, for it includes themes such as DOMESTIC ABUSE, CHILD ABUSE, amongst other heavy subjects that might be triggering. Please, be advised going in. POSTED ONLY ON WATTPAD AND AO3
Secret In The Stars - A Sirius Black Fanfic
In which Violet Evans is stuck between her twin sister and the ever growing feelings she has towards Sirius Black. Or in which Sirius Black and James Potter make a bet to see who can end up with their respective Evans' girl first.Complete
𝐩𝐡𝐢𝐥𝐨𝐩𝐡𝐨𝐛𝐢𝐚 || 𝘳.𝘢.𝘣𝘭𝘢𝘤𝘬
philophobia-the fear of falling in love or becoming emotionally connected to someone... ~~~ This is a story you've heard before, passed down through generations, about a young girl and a young boy who utterly despise each other. Then, somehow, they see that past the walls they've both built up, they can learn to love each other through anything. And they fall apart, one breaking the other only to actually break themselves. When all feels lost, the two reunite and live happily ever after. This story you've heard before. Only difference is, this 𝒊𝒔𝒏'𝒕 that story. ~~~ Where James Potter's younger sister unexpectedly falls for the infamous Regulus Black. -violence -strong language -sexual contentComplete
"𝐈 𝐰𝐢𝐥𝐥 𝐬𝐚𝐯𝐞 𝐲𝐨𝐮, 𝐑𝐞𝐠𝐮𝐥𝐮𝐬 𝐁𝐥𝐚𝐜𝐤. 𝐖𝐡𝐚𝐭𝐞𝐯𝐞𝐫 𝐢𝐭 𝐭𝐚𝐤𝐞𝐬." "𝐃𝐨𝐧'𝐭 𝐰𝐚𝐬𝐭𝐞 𝐲𝐨𝐮𝐫 𝐭𝐢𝐦𝐞, 𝐲𝐨𝐮 𝐜𝐚𝐧'𝐭 𝐬𝐚𝐯𝐞 𝐚 𝐝𝐞𝐚𝐝 𝐦𝐚𝐧." "𝐖𝐞𝐥𝐥, 𝐈 𝐠𝐮𝐞𝐬𝐬 𝐭𝐡𝐚𝐭 𝐦𝐞𝐚𝐧𝐬 𝐈'𝐥𝐥 𝐣𝐮𝐬𝐭 𝐡𝐚𝐯𝐞 𝐭𝐨 𝐭𝐫𝐲 𝐡𝐚𝐫𝐝𝐞𝐫 𝐭𝐡𝐞𝐧, 𝐰𝐨𝐧'𝐭 𝐈?"
More detailsContent Guidelines