Sugiru Juunana no Haru

Takashi experiences nighttime visions of a woman pleading for her child to remain safe. He occasionally notices odd shadows near his window but chooses to disregard them. As his seventeenth birthday nears, the shadow becomes clearer and the visions more intense. Over time, Takashi's personality shifts from being kind and compassionate to becoming indifferent and later cold and harsh toward those around him. The connection between his changing behavior and his upcoming seventeenth birthday remains unclear.