My sister is Luna

"Whoa..."

A blue and a red figure leaped through the forest of the King's Canyon, while a colossal creature charged wildly behind them.

"Roar!" The Crimson Crystal Black Dragon roared as it relentlessly pursued Cain and Mulan.

The trees in its path were all destroyed.

"Mulan, let's run towards the mountains ahead and trap them." Cain's eyes lit up as he looked at the towering, complex mountains ahead.

"Walk."

Cain and Mulan quickened their pace as they advanced towards the mountains ahead.

After passing through the dense forest, they soon arrived at this vast mountain range, where only mountains lay horizontally, without a single tree in sight.

The towering cliffs spread across this vast land, inspiring awe.

"Mulan, grab me!" Cain cried out in a panic, grabbed Mulan's hand, and then forcefully threw her onto a rock.

Mulan landed steadily on a rocky outcrop, drew her greatsword, and prepared for battle.

"I'll be the bait. You just smash the rocks and trap it." With that, Cain shouted to the charging crimson-black dragon.

"You stupid dragon, if you've got the guts... come here!"

After saying that, he even raised his middle finger to show "friendliness".

Although the Crimson Crystal Black Dragon did not understand Cain's words or actions, it could still sense Cain's strong provocation and contempt, and was immediately enraged.

Crimson flames began to spill from the corners of its mouth, and its fiery eyes widened.

"Roar--!"

With a roar, fierce flames poured from its mouth, and it charged straight at Cain without stopping.

"You're breathing fire again!" Cain quickly hid behind a rock.

Flames scorched the rocks behind Cain, then hissed and began to melt slowly, while the flames from the Crimson Crystal Black Dragon's mouth burned relentlessly, closing in step by step.

"Now, Mulan, hurry!" Cain shouted to Mulan, who was standing on a high place, as the Crimson Crystal Black Dragon reached the expected position.

"Hey!"

Upon hearing this, Mulan used all her strength to plunge her greatsword into the rock, producing a sound like metal clashing against stone. At the same time, using the greatsword as a medium, she rapidly injected her martial arts energy into the rock, rotating the greatsword to destroy its internal structure and cause it to collapse.

"Click..."

Instantly, cracks appeared in the hard rock, which began to collapse and pour down with tremendous force, crashing towards the Crimson Crystal Black Dragon. Mulan then jumped to another rock and destroyed it in the same way, until she stopped after destroying the fifth one. She landed on the sixth rock, slightly out of breath, because she no longer had much strength left to continue.

"Ow!"

Huge boulders kept crashing down on the Crimson Crystal Black Dragon. The powerful gravity bent its legs and interrupted its fire attacks. It cried out in pain and tried to struggle to its feet, but soon, the numerous boulders buried it with a thunderous roar, leaving only its huge, ferocious head exposed.

"You did it, Mulan." Cain jumped out from behind the rock, wiping his sweat.

"Well done." Mulan nodded, admiring Cain greatly. The two were very compatible, like one, and were reliable partners who could be trusted to take their backs.

"Roar! Roar roar roar!!!" The crimson crystal black dragon, which was being suppressed, roared angrily, its nostrils twitching and spewing air.

A strange feeling suddenly enveloped the two of them, then vanished in an instant, and Cain shivered for no reason.

"Should we kill it?" Judging from the black dragon's eyes, Cain felt that it wouldn't let the matter rest.

Mulan nimbly leaped down from the cliff and landed on the boulder that was pressing down on the Crimson Crystal Black Dragon.

"If I'm not mistaken, it has already memorized both of our scents."

Mulan drew her greatsword and slowly walked towards the head of the Crimson Crystal Black Dragon:

"It's only a matter of time before it finds us. You can tell from the intense hatred in its eyes that it won't let this go. If it catches up to the Great Wall, we'll have to fight it for nothing. We'll kill it to prevent future troubles."

"It's either you die or I live. No matter how far we run, it will eventually find us. Rather than that, we might as well eliminate the threat now."

"I understand, Mulan." Cain gripped his blade tightly, leaped up quickly, and thrust the blade straight at the head of the Crimson Crystal Black Dragon.

Mulan's greatsword also charged towards the head of the Crimson Crystal Black Dragon.

!!!

Seeing Cain and Mulan's actions, it recalled the slaughter of the dragon race by the so-called dragon slayers. At that time, it was still young and witnessed this cruel massacre. Its relatives and friends disappeared before its eyes, and the boundless blood stained its eyes red.

"Roar!!!" Driven by both rage and the threat of death, the Crimson Crystal Black Dragon suddenly spread its wings, sending boulders flying. It broke free and, flapping its wings, soared into the sky.

"Hold on tight!" Mulan grabbed one of the Crimson Crystal Black Dragon's horns with one hand and held onto Cain tightly with the other.

Suddenly, he noticed that the crystal spike at the very end of the Crimson Crystal Black Dragon's back had several cracks. A thought flashed through his mind: perhaps that could cause it great damage.

“Mulan, throw me onto its back,” Cain said, and began to sway his body.

"Roar!" The Crimson Crystal Black Dragon sensed someone above it and flipped its body in the air, trying to shake them off.

"Hold on!" Despite feeling dizzy, Mulan channeled all her martial arts energy into her hands and threw Cain with all her might, successfully landing him on the back of the Crimson Crystal Black Dragon.

An indestructible demonic body!

With a thought in his mind, the demonic armor quickly covered Cain's entire body. With his strength greatly enhanced, Cain ran and leaped several times on the back of the Crimson Crystal Black Dragon, wielding his giant blade and slashing at the cracked crystal.

The crimson crystal shattered instantly, and orange-red liquid splashed all over Cain.

"Woo! Woo!!!" The Crimson Crystal Black Dragon's body stiffened, the pain fueling its rage. It twisted its body, throwing both of them off.

The Crimson Crystal Black Dragon flapped its wings and chased Cain at low altitude. Cain dodged and guided the Crimson Crystal Black Dragon toward Mulan.

Mulan landed on the ground, gripping her greatsword with both hands, gathering and accumulating martial arts power throughout her body.

"Cain!" Mulan shouted.

Knowing that Mulan was ready, Cain rushed towards her, with the Crimson Crystal Black Dragon hot on his heels.

As the distance drew closer, Cain leaped into the air, revealing Mulan waiting in front of him.

The Crimson Crystal Black Dragon remained unmoved. Enraged, it had lost its reason, folded its wings, and ran at full speed on all fours, its blood-red maw wide open, flames gathering within, determined to annihilate the two.

Hua Mulan took a step forward, and the huge dragon head crashed into the greatsword that was slashing down. It was as if it had hit a giant wall. The body of the crimson crystal black dragon flew up and then fell heavily back down. The violent impact stirred up a sandstorm.

"boom!!!"

With a loud bang and a cloud of smoke, the Crimson Crystal Black Dragon lay on the ground, wounded and exhausted. Its eyes were half-closed, and it looked listless. A greatsword had pierced deep into its jawbone.

"Cough cough..." Cain stepped out, the demonic armor slowly receding from his body. He waved his hand to disperse the choking dust, and under the sun, the crystalline orange-red liquid on his body was particularly dazzling.

"Finally solved." Mulan breathed a sigh of relief, drew her greatsword, and walked toward the head of the Crimson Crystal Black Dragon.

"Now let's end its life."

Mulan was somewhat excited because they had not only eliminated the potential threat to the Great Wall, but also accomplished the feat of challenging a level 14 half-step king with only level 12 strength. This was all thanks to her and Cain's tacit cooperation; the two seemed to be a match made in heaven.

With me and Cain by my side, what fear do we have of powerful enemies! Mulan had this magical feeling in her heart, and she knew that her decision back then was absolutely right.

"Woo... Awooo..." The Crimson Crystal Black Dragon tried to struggle to stand up, but it had no strength left.

At this moment, resentment and bitterness filled its mind.

“Okay.” Cain said, and together with Mulan, they plunged their weapons deep into the head of the Crimson Crystal Black Dragon.

Piercing through the hard skull, the slender, sharp weapon pierced the brain, and the Crimson Crystal Black Dragon was plunged into darkness.

A large amount of blood gushed from the wounds caused by the weapon, unexpectedly splattering Cain and Mulan all over.

Suddenly, something strange happened.

……