Dissolving Classroom by Junji Ito

In this chilling horror manga, a seemingly polite and apologetic young boy, Yuma, and his sinister sister, Chizumi, wreak havoc on unsuspecting towns. Yuma's compulsive apologies hide a terrifying secret: each apology dissolves the brains of those who hear it, leaving behind a trail of chaos and destruction. As the siblings move from place to place, their true intentions and the dark forces driving them become increasingly apparent, weaving a tale of supernatural dread and psychological terror that explores the boundaries of guilt, manipulation, and the macabre.

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