In the midst of his high school life, Jun Kishida, plagued by illness, possesses the unique ability to perceive spirits. Among these apparitions stands Ryoko Hayakawa, a lingering presence from his past. Despite unraveling the enigma surrounding her demise, Hayakawa remains steadfastly by his side. Amidst escalating peculiar and perilous encounters with his peers, Hayakawa's spectral guidance subtly influences his journey.