[Sekihan] Princess Club (Osana Sekai)

Within the bright, ordinary walls of elementary classroom 5-3, a whispered invitation is about to twist a normal school day into something unforgettable. Short-haired tomboy Yu-chan, eager and impulsive, announces she's left her lunch at home and doesn't want to return to the special class — then her eyes lock on shy, bespectacled classmate Mikki-chan, whispering the fateful words "Princess Club." Overhearing the secret, nervous Hira-chan is pulled into their tight little conspiracy, and the trio slips away together, their girlish giggles hiding an unspoken, forbidden thrill. What begins as an innocent skip to the girls' room quickly melts into something far more intimate as the three classmates explore each other's small, soft bodies — tender kisses, trembling caresses, curious fingers, and whispered confessions weaving through a tangle of skirts and flushed cheeks. Yu-chan takes charge with her energetic, assertive nature, while Mikki-chan and Hira-chan surrender shyly to the overwhelming warmth of being touched, tasting, and treasured. But just when their secret world feels perfectly sealed, an older girl appears at the end of the chapter, catching them with knowing eyes and proposing herself as their new "mate," promising that the Princess Club is far from over.