[アヒルいるんだけど！] Kept By a Classmate

A towering classmate turns her shrunken companion into a tiny possession, first soothing him with promises of care before insisting that he is “mine now.” A handmade cozy bed, his frantic protests, and her immense body looming over him fuel a mood of helpless intimacy and mounting possessiveness. What begins as an awkward transformation spirals into a dangerous game of domination, confinement, and unbearable scale.