Best quality, masterpiece, extremely detailed, handsome young man

best quality, masterpiece, extremely detailed, handsome young man, skinny build, messy curtain bangs, blond hair, hick-rimmed glasses, cute preppy college uniform, standing in front of classroom, mathematical equations on blackboard in the background, topless, his arms folded across chest, wearing a collar on the neck, arms tied behind his back with chains, a ball gag strapped around his mouth, nipple rings on his nipples, blushing, hands touching his body, shy expression, gay, homoerotic, romantic atmosphere, ambient lighting, extremely dramatic shadows, perfection, no watermark, no logo, no signature

worst quality, low quality, bad anatomy, bad hands, bad feet, bad body, missing fingers, extra digits, fewer digits, watermark, logo, signature