A character introduced in Mahou Tsukai no Hako, and is playable in Fate/Grand Order alongside Katsuragi Chikagi as the Alter Ego Servant Azumi-no-Isora. In their Third Ascension, they become Sirius, due to Hibiki's true identity as the Holy Scripture Triten.

See Also

• Katsuragi Chikagi
• Smartphone-san
• Hibino Hibiki (Second Ascension)
• Katsuragi Chikagi (Second Ascension)
• Azumi-no-Isora
• Sirius
• Keitai-san

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