To the withdrawn and solitary Ryuuto Kashima, linking himself with his well‑known classmate Runa Shirakawa seemed only a far‑off daydream—or so he believed. When he lost a wager to his friends and was forced to confess to Runa, his reality flipped: instead of the harsh rejection he feared, Runa consented to date him!
Yet being with Runa overwhelms Ryuuto; he asks that their romance stay hidden from everyone except their closest companions. That choice sparks a chain of blunders he worries will destroy the bond. As they untangle their misapprehensions, Ryuuto discloses his anxieties rooted in earlier memories, and the pair grow nearer. Their meetings occupy their days, yet Ryuuto fears being discovered.
Just as things begin to smooth out, Ryuuto"s middle‑school love interest Maria Kurose enrolls in his class and starts causing a stir. Simultaneously, vicious gossip about Runa circulates across campus, compelling Ryuuto to act rashly to shield her. He drafts letters and rehearses excuses, hoping to silence whispers that threaten their bond.
