My Brother’s Little SecretUpdated at Aug 4, 2025, 13:34
Genre: Psychological Thriller · Mystery · Dark Family Drama · YA/New Adult CrossoverWord Count (Projected): ~90,000–100,000Tone: Dark, twisty, emotional, with light moments of humor and romanceSeventeen-year-old Lena Takashi is no ordinary heiress. She’s the only daughter of the wealthiest man in Kyoto—but she’s lived overseas her entire life, sheltered from Japan’s elite society and her estranged family. When her father asks her to return home, she agrees—on one strange condition: he must reunite her with her five adoptive older brothers, men she has never met in person.What starts as a dramatic homecoming quickly turns into something far more dangerous.On the night of her arrival, Lena ditches her welcome reception and sneaks out to a Tokyo nightclub, looking for freedom and a taste of the life she’s missed. Instead, she witnesses a cold-blooded murder in the VIP lounge. Caught in the killer’s line of sight, Lena makes a split-second decision: she pretends to be blind. The killer spares her… but the lie is just beginning.The next morning, Lena meets her five non-blood-related “brothers”—handsome, powerful, and each with a mysterious reputation. To her horror, the killer is one of them: Kaito, the coldest and most enigmatic of the group, who now appears wheelchair-bound and emotionally distant. Still pretending to be blind, Lena must live under the same roof as him—balancing her fear with her curiosity as she tries to understand who he really is… and why he faked a disability.Her other brothers—Ren, a world-renowned surgeon; Riku, Japan’s beloved idol; Toma, a ruthless international judge; and Sora, a reclusive fashion designer—each have secrets of their own. Lena’s presence in their lives sets off a quiet storm of emotional unrest, long-held resentment, and buried family history. Slowly, they begin to warm up to her, not knowing the girl they’re protecting is anything but innocent.All the while, Lena plays a dangerous double role. When she dons a disguise and sneaks out again as a different persona, Kaito meets her without realizing who she really is—and finds himself drawn to her. Desperate to uncover his true nature, Lena seduces him under her false identity, only to realize the lines between the lie and her own emotions are beginning to blur.As dark secrets about her mother’s death resurface, and an anonymous warning letter shakes her trust in those around her, Lena must decide who to believe—and whether the truth is more dangerous than the lies.Because in this house, nothing is as it seems.And the biggest secret of all… might be hers.My Brother’s Little Secret explores identity, trust, found family, and the blurred line between right and wrong. It’s a dark, emotional thriller with twisted romance, deep psychological layers, and a heroine who isn’t afraid to play with fire to uncover the truth.