Dragon Extermination Quest

After Igni attacked Goren and a lot of Adventurers were coming to town, Keima decided to "get rid of" the Dragon because he couldn't sleep with that much noise.

Synopsis
Keima's plan was to have Wataru the Hero beat Igni, then let her flee to some distant mountain. That would send the dragon away from here and let beloved peace return to the town. Once the dust had settled, Igni could come back without a horde of adventurers after her.

The initial plan was to negotiate with Igni while she was drunk, asking her to leave. But that didn't succeed as Igni was so drunk she forgot her role. Plus Wataru - her love interest -, came as well so she wanted to welcome him in her home.

As she broke the Salamander Chains which Keima got from Ittetsu, 4 members of the Team got scared of the dragon's aura, so much that they couldn't even move. Because they got cornered Keima decided to use his B plan, which was "summoning" Ittetsu, her Dad.

As the Salamander rushed into the Boss Room, he tried to tackle Wataru as he was the one who hurt Igni before coming back to the dungeon. The one hurt was Ittetsu instead as the Hero of Debt launched a counter-attack. After the exchange of blows between men, Ittetsu tried to calm his daughter down.

But a few minutes later Igni asked Wataru to team up with her to beat Core 112 because he might attack Wataru later on, and she promised him she is a good dragon.

But Keima stopped the battle as he calmly analyzed that he should even be a part of this, so he sit out. After 30 minutes all three of them were exhausted, drained of energy, and hurt all over. Any of them would fall over from the next solid blow that hit them. It was a disaster zone. And suddenly, for some reason, all three of them looked Keima's way. Ittetsu and Wataru went for the head while holding back but Igni lighted a white fire that would kill everybody but Ittetsu if hit.

Keima reached out and blocked Ittetsu’s fall, which was only possible thanks to his golem assistance. The weight definitely would have been too much to bear without the orichalcum and he used Ittetsu’s momentum to throw him towards Wataru. Igni tried to "sneak" behind Keima so he was surrounded by the three of them.

He decided to lose by getting hit from Wataru but his golem assistance worked its magic: he swiped Wataru’s right fist with the back of his readied left hand like a first-class grappler, knocking it away. That was a move taken from Misha, Haku’s subordinate and the guild master of the imperial capital’s Adventurer’s Guild. He had observed Misha's training and implemented all her moves into his Wearable Golem. That was also how he had been able to throw Ittetsu like that. Misha’s attack didn’t stop with just a swipe. The mark of a first-class fighter is combining offense with defense. Swiping Wataru’s hand sent his momentum to the left, leaving his face defenseless against Keima's right fist as it slammed into his nose and sent him flying.

Keima thought it would be good to be stomped on by Igni, but Kosaki riposted because she didn't want to die.

Keima decided to use her with her possession and becoming a Succubus Queen because 112 said it would even charm him. Ittetsu got scared and took out his Chains of Admonition, which would protect against Charm. Keima taunted him not to use it, used Kosaki, but Ittetsu knocked himself unconscious. Igni used his dad's chains and started a breath attack but Keima touched her reversed scale which is like a human nipple of a dragon, making her falling unconscious from the pleasure (Succubus Touch).

Aftermath
Keima and others became Dragon Slayers, even though they didn't kill it. Igni gave Keima her Dragon Ball (enchanted with her fire element) declaring that they beat her