should've...

In a classroom, a character with spiky black hair stands in the foreground, looking down with a pained expression, while other students stand in the background near a green chalkboard; the scene cuts to a black screen with the words "I SHOULD'VE HELD YOU" and "KEPT YOU" appearing in sequence, followed by a blurry image of a hand reaching out against a blue sky with clouds, suggesting a moment of regret and a failed attempt to hold on.