Ryu got down of the hole reaching a path to the last boss chamber. 

Selia points to the direction of the castle. As the group of adventurers proceeds, Ryu is preparing his kerchief wings for a climb.

"Where are you going Ryu", Selia asked

"Up there, Idk why but the dragon is in pain, it must be sort of key." Ryu said.

Then Im going with you. Selia reached out to Ryu. 

Huh?

"You always run away and came back at bruises and I have to be the only one to heal since I am the only healer specified in this world", Selia added

Selia reasonly nags and Ryu allowed her out of nagging.

Ryu struggle with an unknown load. As he reached the wall, he saw Selia at his back. He manipulated his kerchief into tying Selia up to his back.

Ryu started his tentacle climb.

The knights and the vc are struggling to the armor giant. They both have swords one attacking the intruders while the priest sits  with the other guarding him from range attacks

"As long as the dragon is alive, I can maintain this enormous giants", the priest thought to himself as he spawn some chimeras.

The rest of the adventurers from the surface came to aid the taskforce.

"Why are all here, what happen to the town?" Butch said while reuniting with his party.

"We got here by the hole dug by the moles. Some are finishing the monsters above while we are here to assist you." the adventurer of Butch's party said.

Thank goodness, where is Selia?, Butch said

"Ah he is with Ryu climbing the wall?", Butch sarcastically repeats

Climbing the wall?!

"Yes climbing the wall, nvm that lets fight and reach the knights.", the adventurer said releasing fire.

With the additional manpower of the adventurers, they defeated all of the monsters reached the throne room. They witness a horrible sight.

The captain of the knights on the wall in pain. 4 other are down. While the vice commander is still fighting the one giant.

"Well well, more fighters for my giants". The priest said. "This will be your tomb and once you all are dead, I will make you my minions," priest dictates as he brought forward the other giant and some chimeras.

(Still climbing the wall)

Ryu and Selia at his back are reaching the cliff where the dragon is.

:Can you go any faster?" Selia complains looking down

"I would be if someone didnt nags about you coming as a load of weight.", Ryu said angrily

"What do you mean load of it. My body is perfectly toned." Selia said pressing her chest into the Ryu.

"Hey, stop distracting me with your boobs", Ryu densely said seeinf the top

"Pervert!", Selia said slapping Ryu at the back of his head.

They reached the top and hide when knights approach the dragon. By the rocks, they saw the dragon trapped at the castle walls and protecting its eggs out of reach. Being trapped, it cant get closer to it. As some knighta try to reach the eggs, the dragon can only use little fire and wind without harming them. The knights attacks the dragon efrectively( since they came from its blood)

Ryu runs towards the knights and slashes them with the kerchief blade. Launching tentacles to the dead knights near the dragon at the process. Without hesitation, he got reached the nest. The dragon stared with anger for its eggs and about to release some flames. Selia alarmed Ryu about the attack. Ryu pushed the nest towards the dragons reach before its fire reaches him. The dragon looked closely and saw its eggs near at arms reached. With its one arm, it grabbed the nest. 

A sound of relief. The dragon stopped staring death at Ryu as it looks into its egg.

Wow you saved the 3 eggs from the enemy, trying to snatch it. Selia said approaching Ryy

"One", Ryu corrects

"One what?", Selia wonders

One egg is still intact. The two eggs were just stained and cracked open by some snakes or what. Ryu said. His injuries are critical. The thing that keeps it alive is the protecting the egg

After being trap, the dragon is happy to have an egg alive. As the fight continues at the kings throne, the mystery of the dragon was solved.

"Human", a voice spoke