In July, after realizing that the countermeasures to the Class 3-3 calamity are not working, he kills his bedridden mother by smothering her with a pillow the night before stabbing himself in the neck in front of the class.
Pada bulan Juli]], setelah menyadari bahwa upaya pencegahan kutukan Kelas 3-3 tidak berhasil, dia membunuh ibunya dengan membekapnya dengan bantal satu malam sebelum menusuk lehernya sendiri di depan kelas.