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[Original Manga](https://mechacomic.jp/books/180411)
Fabiola, the second daughter of the Viscount family, is the middle of three sisters. On her own, she’s a perfectly lovely young lady. But next to her sisters, she fades into the background. Her older sister is a breathtaking beauty with a stunning figure and irresistible allure, while her younger sister is so fragile and sweet she stirs everyone’s protective instincts. Sandwiched between two sisters who effortlessly draw all the attention, Fabiola has always been the “ordinary” one. But now, she’s determined to step out of their shadow and claim a life and love of her own. https://www.cmoa.jp/title/284597/
[Original Webtoon](https://www.comico.jp/comic/8969)
Love and dreams begin to move in this beautiful seaside city. Yua is 13 years old and helps out at her mother's boarding house. One day, her favorite twin idol unit 'Tachibana Brothers' moves in, and she finds out that she is actually a quintuplet! ? An exciting day begins at a wonderful house by the sea.
The dull office worker Mirai suddenly finds herself reincarnated into the world of her favorite web novel, When the Golden Mirror Shines! Now living as the heroine, Luna, she rejoices at the chance to achieve a happy ending with her beloved hero, Valei. Since she knows the entire storyline, everything should be smooth sailing... or so she thought—until the novel’s author, whom Mirai practically worshipped as a god in the real world, starts rewriting the plot?! With one unexpected crisis after another caused by the author’s whims, can Mirai—now Luna—still reach her happily-ever-after with Vallei?!
https://www.cmoa.jp/title/303773/