The party arrives at the Kuryuen Volcano.
They mess around near the entrance, there's a lot of description on the Volcano, and Hajime thinking to himself about the situation and why he's gathering the rocks for Kaori. They fight some sand worms, and a boar, and Eventually, the group heads into the dungeon.
During Hajime's thinking, it's revealed that he secretly collected the demons he killed back in Orcus, one of the abilities was a demon shockwave magic, which he installed on Shia's hammer, but other than that there wasn't much stat gains.
Chapter 84
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The chapter starts with Hajime and his harem riding in a boat made of stone on a magma river... which is floating in the air. This is around the 50th floor.
What caused this situation was because Hajime found a place where massive amounts of the static factor stone that he needed for kaori, he located and took it. Apparently this stone made the movement of lava stable, and upon removing it, it made the lava river float up into the air. So when Hajime Transferred it to his treasure box, it made the surrounding lava flow around Hajime become more violent. Hajime and group ran and quickly made a stone boat.
While riding the boat they found a tunnel and a current leading downwards. Inside the tunnel the party getting attacked by an army of magmas bat. The bats attacked from the front and behind so Hajime take out his Mini-gun and mowed down the army in front, while Yue used her 'wind dragon' and took care the enemy in the back.
After the battle, some more harem hijinks ensue, and the usual things.. just kinda happen.
After awhile, they arrive to a place that is most likely to be the last room of the dungeon. The room is about 3km wide or more. This room was like a sea made of lava with a small 'island' in the centre. In one corner of the room, there is a scaffold with a stairs leading up, most likely the original route you'd take if you went through the dungeon... and also if you're weren't a fucking cheater.
The 'boss battle' begins and the surrounding magma started to attacking hajime's group. The party start to intercepting the attack, Yue used her gravity magic to contain the magma.
Hajime realize this is this is probably the last trial in this dungeon and he takes note that unlike the previous 2 dungeon, there is no visible enemy this time. He start using 'air walk' and try to get to the island in the centre.
When Hajime is about to reach the island, he is ambushed by a magma snake. Hajime easily disperses the snake but he surprised because the snake was made out of magma, and Soon more magma snakes came out. Hajime retreats back to the party and talks it over with his team, Hajime speculate the magma snake has a magic stone inside, more than 20 snake attack Tio compress her magic in both her hands and unleash her dragon breath. Hajime with his dynamic vision saw the magic stone jump out of the magma snake before it was destroyed. Shia realize that in the island there is a stone with an 8 Ore light, Hajime speculate that it's the number of snake the group manages to kill, and he also note there is another 92 ore haven't light up yet.
With this information, the party knows how to clear the dungeon so Hajime's party starts to spread out. Tio floats with her dragon wings and uses her wind magic kill another one, she then make the announcement, "I am ahead by 9 Snakes; Master I desired a reward/(punishment) when I defeat most of them." Hajime tries to refuse but Shia soon join in the competition.
Hajime wanted to stop Tio and Shia arbitrary competition, but Yue also expresses her will to compete as well. She start to summon 7 Thunder Dragons to kill the snakes.
Banter breaks out between the girls, and eventually Hajime resigned to the girls competition. The reward being an overnight stay in Hajime's room.
Hajime continues closer to the island while destroying magma snakes on the way. Hajime kills the last snake, and the group rejoices. Suddenly an aurora came showering from above.