Lineage of Fire is the 6th episode of the Fairy Tail: 100 Years Quest anime.
Encountering the White Wizard-influenced Mercphobia, the Fire Dragon God Ignia comes to Natsu's rescue, burning the city which causes the reflexes of the Water God to put them out. Revealing to be the true son of Igneel, the Fire Dragon gives an ultimatum for Natsu to save the remains of the city by consuming his own flames, all in order to fight him.
Summary[]
Short: Lucy's Lament[]
Main Story[]

Mercphobia creates a vortex
Mercphobia targets the harbor with a destructive water-based attack, to Fairy Tail Mages’ dismay and Natsu’s anger. Carried by Happy, the dragon slayer confronts the Water Dragon God with his dragon roar, but the attack is quickly extinguished by Mercphobia, and the two are caught in the latter’s wave. The rest of Team Natsu make their own attempts to deal damage to the dragon, but to no avail. Natsu manages to jump onto Mercphobia, expressing reluctance at having to battle the Water Dragon God while also vowing to slay him. However, Mercphobia neutralizes his magic and creates a vortex, which then envelopes the dragon slayer as the other Mages look on in terror. At that moment, a dragon hand emerges from the vortex, enclosing Natsu, as a voice declares his refusal to hand the Fairy Tail Mage to Mercphobia.

Ignia enters the fray
Sensing an enormous magic power radiating from the fist enclosing Natsu, the Fairy Tail Mages look on in shock as a red dragon emerges from Mercphobia’s vortex. The newcomer questions the rogue Water Dragon God on his condition, but receives no response due to Mercphobia’s inability to reason. The red dragon suddenly releases his grip on Natsu, urging the dragon slayer not to lose while ignoring the question of his identity. He states that Mercphobia had not yet exerted full strength, taunting Natsu’s weakness and his relation to Igneel.

Ignia, the biological son of Igneel
Revealing himself to be a fire dragon, Natsu’s rescuer sets flame to the buildings in the harbor, causing residents of Ermina to flee from the site. Mercphobia instinctively attempts to douse the burning city with rainfall from the sea, although the red dragon boasts that his fire is capable of burning water. As Natsu angrily voices opposition to the fire dragon, the latter encourages him to extinguish the flames himself by consuming them. He further states that he will not assist the dragon slayer in combat, savagely expressing a desire to make Natsu a formidable opponent for him to battle. Assuming the form of a human, the fire dragon reveals himself as Ignia, one of the Five Dragon Gods, and the biological son of Igneel.

Ignia threatens Natsu's comrades
Amused by Natsu’s vexed expression, Ignia reveals the circumstances behind his relation to Igneel, claiming that he did not know his father or even care for his demise. He further explains that he and several dragons had taken refuge from Acnologia nearly four centuries prior, with the Five Dragon Gods of Guiltina eventually growing to surpass the reputed King of the Dragons. Having been unable to test his strength on Acnologia, Ignia expresses frustration at Natsu’s apparent weakness, and, hoping to motivate the dragon slayer into boosting his skills, threatens the lives of his comrades. He is subsequently attacked by an infuriated Natsu, although he is left unfazed and simply promises to confront him in the future. With that said, Ignia resumes his dragon form and departs from the harbor.

Natsu throws Mercphobia
Meanwhile, the other Fairy Tail Mages approach a downcast Natsu, who stubbornly refuses to consume Ignia’s flames. However, he eventually complies after being berated by his teammates, eliminating the fire from Ermina. Commenting on the sudden rush of power, Natsu leaps towards Mercphobia and effectively lands a hit on the Water Dragon God. He launches several consecutive attacks, even managing to throw Mercphobia by the tail as the rest of Team Natsu look on in ecstasy. Lucy, however, narrates her unease, even expressing fear at Natsu’s flames.

Fire Dragon King's Brilliant Flame
Now empowered with Ignia's flames, Natsu faces against the Water Dragon God. Mercphobia fires a powerful roar, but the fire Dragon Slayer counters with Fire Dragon King's Brilliant Flame. The fire from the attack is strong enough to not only stop the roar but push through it and hit the Dragon God, stunning him. Natsu asks the others for help as he cannot beat the Dragon God alone, remembering that they only defeated Acnologia because they fought together. Gray and Erza charge as they are enchanted with Dragon Slayer Seals and aim for the Dragon God's legs. With this, Natsu lands a Demolition Fist.

Lucy stops Natsu from attacking
As Mercphobia collapses, Karameel thinks to herself that this was probably for the best as she and the townsfolk grieve for the Water Dragon God. However, Natsu claims that he is not done yet as there is still the Dragon's body. He ominously says that he must burn every single thing until they all turn to ash, scaring the others as he is about to attack once more. Suddenly, Lucy hugs him from behind, enduring the heat emanating from the Dragon Slayer, to the point that her clothes start burning. She tells him that it is over now, where they both fall to their knees, still embracing the Dragon Slayer. Thanks to this, Natsu calms him down and is brought back to his senses.
Characters in Order of Appearance[]
Battles & Events[]
- Team Natsu vs. Whiteout Mercphobia (concluded)
Magic, Spells and Abilities used[]
Magic used[]
- Dragon Slayer Magic (滅竜魔法 Metsuryū Mahō)
- Fire Dragon Slayer Magic (炎の滅竜魔法 Honō no Metsuryū Mahō)
- Water Dragon Slayer Magic (水の滅竜魔法 Mizu no Metsuryū Mahō)
- Sky Dragon Slayer Magic (天の滅竜魔法 Ten no Metsuryū Mahō)
- Spatial Magic (空間魔法 Kūkan Mahō)
- Celestial Spirit Magic (星霊 魔法 Seirei Mahō)
- Requip (換装 Kansō)
- The Knight (騎士 Za Naito)
- Aera (翼 Ēra)
- Molding Magic (造形魔法 Zōkei Mahō)
- Ice-Make (氷の造形魔法 Aisu Meiku)
- Transformation Magic (変身魔法 Henshin Mahō)
- Enchant Magic (付加術 Fukajutsu)
Spells used[]
- Star Dress (星霊衣 Sutā Doresu)
- Star Dress: Sagittarius Form (サジタリウスフォーム Sajitariusu Fōmu)
- Fire Dragon King's Roar (炎竜王の咆哮 Enryūō no Hōkō)
- Water Dragon's Roar (水竜の咆哮 Suiryū no Hōkō)
- Ice-Make: Stairs
- Crimson Lotus: Exploding Flame Blade (紅蓮爆炎刃 Guren Bakuenjin)
- Fire Dragon King's Brilliant Flame (炎竜王の煌炎 Enryūō no Kōen)
- Ice-Make: Ice Geyser (氷欠泉 Aisu Geizā)
- Fire Dragon King's Destruction Fist (炎竜王の崩拳 Enryūō no Hōken)
- Dragon Slayer Seal (滅竜印 Metsuryū In)
Abilities used[]
- Flight
- Hand-to-Hand Combat
- Swordsmanship
- Dragon Force (竜の力 Doragon Fōsu)
- Fire Dragon King Mode (モード炎竜王 Mōdo Enryūō)
Armors used[]
- Heaven's Wheel Armor (天輪の鎧 Tenrin no Yoroi)
- Heart Kreuz Armor (ハートクロス鎧 Hāto Kurosu Yoroi)
Weapons used[]
- Swords
Manga & Anime Differences[]
- Natsu calls out to Happy before the two charge toward Mercphobia in the anime.
- After Mercphobia renders Fire Dragon King's Roar ineffective and blasts Natsu away, Erza has requipped into her Heart Kreuz Armor instead of remaining in her Heaven's Wheel Armor. In the manga, Erza requips into her Heart Kreuz Armor while climbing Gray's Ice Make: Stairs.
- In the manga, the explosions of Crimson Lotus: Exploding Flame Blade are localized to above and below Mercphobia's head, while in the anime, the explosions cover his body. Furthermore, in the anime, Natsu's eyes remain open and he realizes his attack had no effect before Mercphobia's water-encased body is seen.
- Happy is blown back to the ground when he tries to rescue Natsu from the whirlpool in the anime. Accordingly, he is not airborne when Natsu is sucked in.
- A shadow is seen in the water before Ignia's fist emerges.
- Happy does not attempt to fly to Natsu right after Ignia's fist emerges in the anime.
- Ignia's dragon form uses the updated design shown in Chapter 106 rather than the chapters the episode was adapted from, but without the markings around his eyes.
- In the anime, Ignia starts burning the town after he finishes talking. When he is seen powering up, flames are not gathering around his fist, and are instead shown gathering around the rest of his body.
- The townsfolk seen when Mercphobia extinguishes Ignia's flames are all standing.
- Shots of Mercphobia's human form are seen when Ignia states all dragons can transform into humans.
- In the anime, Ignia is still smiling as Natsu attacks him, while in the manga, he appears somewhat surprised.
- Natsu's consumption of Ignia's flames is accompanied by a pan over the burning parts of the town, showing the flames being extinguished.
- Natsu's body is already changing after he says the flames are similar to Igneel's in the anime.
- The clash between Mercphobia and the empowered Natsu has additional scenes in the anime.
- Natsu prepares Fire Dragon King's Brilliant Flame while Mercphobia prepares Water Dragon's Roar instead of casting the attack in response to Mercphobia casting his.
- Fire Dragon King's Brilliant Flame smoothly passes through Water Dragon's Roar while stopping the attack in the anime instead of violently causing Water Dragon's Roar to disperse as in the manga.
- The anime cuts out a scene of supplicants praying when Mercphobia is defeated.
- Natsu has flames trailing from his arms as he walks towards the defeated Mercphobia in the manga, while the anime shows him glowing.
- As Natsu prepares to burn away Mercphobia's body, the others are seen struggling to hold on from the energy discharge in the anime.
- The burning damage done to Lucy's clothes and Natsu's hands is toned down in the anime.
- The rest of Team Natsu, as well as the townsfolk, are seen looking at Natsu/the sun in the anime after Natsu has calmed down.
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Alvarez arc | Water Dragon God arc | Wood Dragon God arc |
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