呪い means “curse” or “spell,” and it is the central image of the song. The narrator describes an overwhelming desire that feels like a supernatural curse, one that can only be broken by the touch of the person he longs for.
This word is memorable because it connects the song’s intense emotions with dark, dramatic imagery, while also introducing the useful kanji 呪, associated with magic, curses, and incantations.
"Curse" is Janne Da Arc at their most shameless. The singer opens by brushing someone off: "だから別に大丈夫だって" [So I said I'm fine], then "戯言は聞き飽きてきた早く消えろよ" [I'm sick of your nonsense, just get lost]. He even admits his only goal was physical, and pretty bluntly: "目的は粘膜とのハデなカラミアイ" [The goal was a wild tangle of skin on skin]. Then the twist lands. Some time after he threw his "toy" away, something goes wrong: "そして発動したあなたの呪い" [And then your curse kicked in]. 発動 is the word you'd use for a spell or a special move being triggered in a game, which is a fun choice here.
The curse is that nobody else satisfies him anymore. "あなたの感触じゃなきゃ 呪い解けない" [If it's not your touch, the curse won't break]. The middle of the song gets moody and smoky: "歪む煙乾いたノド" [Warped smoke, a dry throat], rolling dice to kill time, and a fortune reading where "不吉なカード 二度も並んだ" [the unlucky card came up twice]. Underneath the swagger he keeps confessing "今でも想うあなたを" [I still think of you], and the bright memories of the past make the present look even darker. The last line, "そして発動したヤリ足りない" [And it kicked in: I haven't had enough], uses ヤル, crude slang for sex, so treat that one as a word to recognise rather than repeat. Honestly, the whole thing is a bit much, and that is exactly why it's fun.