All around Mana, humans are being stricken with a strange illness that turns them all wrinkly and causes them to fall unconscious. She notices that her classmate Tsutomu is acting oddly, but he keeps telling her to leave him alone. Worried, Mana goes to his apartment building. But, faced with his mother's piercing gaze, Mana runs away. That night, Mana tells Kitaro about Tsutomu and his mother's odd behavior. Wondering if it's somehow connected to the strange illness, Kitaro and Cat-girl go to Tsutomu's apartment. What they see there, the truth behind the illness is...?!
"It doesn't matter
if a few people are hurt a bit."
".لا مانع إن تأذى بعض المقربون قليلًا"
„Ist nicht schlimm, wenn andere
ein kleines bisschen verletzt werden.“
Creía que no importaba que 
lastimara un poco a los demás.
Creía que no importaba que hiciera
un poco de daño a los demás.
« Ce n’est pas grave
si les gens autour de moi souffrent un peu. »
Non importa se le persone intorno a me 
si feriscono leggermente, mi dicevo...
"Não importa se machucar
algumas pessoas."
«Ничего страшного, если несколько 
людей немного пострадают».