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Sameko Sena and Morimiya Karin debuted together in the first generation of Treasure Box, a miracle wave that became a cultural explosion. As years passed, new generations like Council and Adventure rose, but internal strain grew behind the scenes. Sena, frustrated by Treasure Box’s rapid expansion and growing neglect of earlier members, eventually left and joined Café Atlantica, while Karin stayed because she secured a major music deal. Kairi, a rising star of Adventure and a dedicated kouhai who admired Sena, became unintentionally involved in a silent feud. Fueled by burnout, mismanagement, unspoken jealousy, and a widening gulf between seniors and juniors, Sena and Kairi’s interactions soured into a bitter rivalry that spilled into their fandoms. Unbeknownst to anyone, many conflicts inside Treasure Box — including the pressure on Council, the tension between generations, and the erosion of trust — were secretly pushed along by falsified directives and altered logs planted by an unseen third party within the management system.
Sena returned for Karin’s anniversary event and clashed violently with Kairi, leading to an on-stage meltdown that forced management to take action. Kairi was publicly fired, and the chaos tanked Café Atlantica’s reputation so badly it was forced to close, leaving Sena jobless as well. Both pursued mundane careers while drifting further from their former dreams. Two years passed. Karin retired from Treasure Box and opened a fine restaurant, but when her clientele began aging and sales slowed, she decided to hire cosplay maids to revive the charm — choosing Sena and Kairi, separately, without telling them they’d be partners. The two unsuspecting rivals reunited in the most absurd ways: sharing the same Uber, discovering their identities through accidental anime-voice slips, and instantly reigniting their old hostility. Karins attempts at reconciliation failed, as the women refused to work together, fought constantly, triggered Quacker trends, and even had a third full-blown brawl that forced Karin to suspend them.
During their suspension, painful truths spilled out. Sena feared Kairi had been groomed to replace her. Kairi secretly admired Sena as her inspiration. Both admitted guilt for how their careers were destroyed and realized they had been sabotaging each other out of wounded pride, insecurity, and lingering affection they never understood. Tension finally cracked open into warmth and then desire, culminating in their unexpected first kiss — all caught on video by Karin, which reignited the #SeKai frenzy online. With their relationship shifting from rivalry to romance, Karin brought them to Treasure Box HQ as part of their management-imposed penalty. There, the current leads — Owlette, Minuette, AiRi, and Emilia — revealed that many of the directives that once drove members apart were tampered with. Someone had rewritten mandates, altered logs, and planted misinformation that manipulated generations against each other. The old Treasure Box fractures weren’t imagined; they were engineered.
Meanwhile, elsewhere, Helena Flora — once a shy, underappreciated Council member who quit years ago — shed her old persona entirely. Now calling herself Ayumu Nami, she stepped out from the shadows as the mastermind behind the internal sabotage. Fueled by resentment and a desire to reshape the idol world, Ayumu’s first major move was reopening the now-vacant Café Atlantica under her new control, signaling that she was ready to escalate her plan. As Sena and Kairi reunited with old friends, rekindled their dreams, and embraced their long-suppressed feelings for each other, a greater threat waited beyond their awareness — one who had already destroyed them once, and who was preparing to strike again.
I'm a schizo yes I am.
