Out of the blue, Yoshimi Numamoto finds himself the recipient of a marriage proposal from a stunning girl whose name he doesn't even know. Surprisingly, she happens to be an incredibly wealthy young lady. Perplexed by her unwavering confidence, Yoshimi is thrown into an awkward predicament that quickly escalates. Brace yourself as his ordinary school existence takes an unexpected twist with the commencement of a delightful romantic comedy between a dazzling girl and an unassuming boy!