Demon Slayer Isekai AU EP45: Dragon Festival Arc Pt3, An awkward Confrontation (Giyu vs Zirconis)

The dragons from the west continent were attacking Montes Secreta while catching the demon slayers off guard. The leading dragons, first the original Acnolog

Demon Slayer: Kimetsu no Yaiba Swordsmith Village Arc (English Dub)

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Fairy Tail Season 3「AMV」- Dragon slayer vs acnologia - Bstation

Demon Slayer: Kimetsu no Yaiba Swordsmith Village Arc (English Dub)

Demon Slayer Isekai AU EP41: Indomitable Will of Hashibira Family Pt7, The Battle of Resolve

Demon Slayer Isekai AU EP5: An awkward first meeting (Fanmade Ship: Takashi Kocho X Aki Toyota)

Demon Slayer Isekai AU OVA1: Friendly Football Match (Old Legends vs. Young Talents)

Zirconis, Fairy Tail Wiki

Demon Slayer: Kimetsu no Yaiba Swordsmith Village Arc (English Dub)

The Record of Unusual Creatures - MangaDex

Demon Slayer Isekai AU EP43: Dragon Festival Arc Pt1, The Negotiation (Ft. Acnologia backstory)

Dragon Slayers Fight Dragons! Zirconis' Magic – Fairy Tail 194

Demon Slayer: Swordsmith Village Arc Episode 6 - The Tragic Genya and Sanemi Backstory - Anime Corner