It's August 31st, Kanako's birthday. Her classmates, Ryuken and the seniors, Shizu and father Kanae plan to make different parties for her, but at her birthday, she doesn't find anyone. Trying to run away from the expanding seaweed, she ends up at the church, where everyone has made a party for her.
前略天国のお母さん。ここ第二女子寮には、かなこが立入りを禁じられた場所がひとつあります。それは大浴場です。以前、浴室のお湯を鼻血で真っ赤に染めたことでゴッドの逆鱗に触れ、立入り禁止とあいなりました。かなこは今、そんな大浴場の天国と壁一枚へだてた自習室にいます。もうすぐ夏休みも終わり。待ち受けるあの日を前に全てを終わらせてしまわなきゃーー。
