Arcanum Duo is the tenth volume of the Hidan no Aria novel series released on July 22, 2011. This novel begins the GIII League arc.
Summary 
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ChaptersEdit
- 1st Ammo: Descent of the Hawk -Crimson Geo-
- 2nd Ammo: Deen Conference
- 3rd Ammo: Secret of the Deep Blue -Deep Blue-
- 4th Ammo: Three Roads of Immorality -Three Outs-
- 5th Ammo: Surprise Rose
- Epilogue: Go for the Next!! Impromptu Sisters -Belt Link-
IllustrationEdit
Trivia Edit
- Arcanum Duo refers to Kinji Tohyama and Kaname Tohyama triggering each other's Hysteria Mode.
- Kinji becomes at odds with Team Baskerville over handling GIV.
- Kinji gives GIV the name Kaname.
- Meiya Romano returns.
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| Light Novel | I • II • III • IV • V • VI • VII • VIII • IX • X • XI • XII • XIII • XIV • XV • XVI • XVII • XVIII • XIX • XX • XXI • XXII • XXIII • XXIV • XXV • XXVI • XXVII • XXVIII • XXIX • XXX |
| Side-Stories | Reloaded: Cast-Off Table • The Case of Naruse Yukari • The Case of the Lost Peachbuns • Side-Story IV • Hidan no Aria: Scarlet Festa |
| Manga | HNA I • HNA II • HNA III • HNA IV • HNA V • HNA VI • HNA VII • HNA VIII • HNA IX • HNA X • HNA XI • HNA XII • HNA XIII • HNA XIV • HNA XV • HNA XVI • SW I • SW II • SW III |
| Anime | EP01 • EP02 • EP03 • EP04 • EP05 • EP06 • EP07 • EP08 • EP09 • EP10 • EP11 • EP12 • OVA |
| Music | Scarlet Ballet • Camellia no Hitomi |
| AA Novel | AALN I • AALN II • AALN III • AALN IV |
| AA Manga | AAI • AAII • AAIII • AAIV • AAV • AAVI • AAVII • AAVIII • AAIX • AAX • AAXI • AAXII • AAXIII • AA Finale |
| AA Anime | AAEP01 • AAEP02 • AAEP03 • AAEP04 • AAEP05 • AAEP06 • AAEP07 • AAEP08 • AAEP09 • AAEP10 • AAEP11 • AAEP12 |
| AA Music | Bull's Eye • Pulse |
