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Number

番狗―ナンバー―

Toneriko Furoribanda lost his family ten years ago, murdered by Tekirai, the elite assassin known as "Number 1" of the killers' guild Thanatos. Instead of seeking revenge against the guild itself, Toneriko joins Thanatos and rises through its ranks to become "Number 5." He trains relentlessly, driven by the desire to challenge Tekirai and avenge his mother and sister.

The guild's supervisor, Ageha, reveals a dark legend behind Thanatos: whenever the ten top-ranked assassins complete 999 murders, a "Black Sheep" cycle ends. After ten such cycles, totaling 9,999 kills, the current Number 1 will ascend to Asgard and gain the power to reshape reality itself. Toneriko must navigate deadly rivalries and bloody missions, all while climbing toward the top to face the man who destroyed his past and possibly change the future.

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