Unlock Kamen Riders in Douluo's Way

Luo Pupu, back in her dorm room that night, still wore a pout, replaying the scene of Yin Xiaoya's rejection, followed by his invitation to Fang Xin, over and over in her mind. An indescribable itch of jealousy and frustration bubbled within her, making her feel deeply uncomfortable.

"Humph!"

She stomped her foot, marched to her desk, and slammed Kamen Rider Ryugen's Sengoku Driver and Grape Lockseed onto the wooden surface. After a moment of contemplation, she retrieved the Green Fruit Swamp Dragon's soul bone, and finally, activated her second spirit ring, causing it to glow with a soft, purple light. The four items — the driver, the lockseed, the soul bone, and the spirit ring — pulsed with energy, resonating with one another.

"Tell me!" she demanded, her voice echoing in the small room. "Why didn't you let me use the driver and lockseed? Big brother rejected me because of you!"

In Luo Pupu's vision, the world around her dissolved into a swirling white void. Within this emptiness, the light emanating from the driver, lockseed, soul bone, and spirit ring intensified, coalescing into a vibrant green. The spectral form of the Green Fruit Swamp Dragon materialized before her.

The dragon sighed, its ancient eyes filled with a weariness that belied its powerful form. "It's not that Lord Yin Xiaoya rejected you, but that you are not yet strong enough to withstand the power of the Kamen Rider."

"That's nonsense!" Luo Pupu retorted, her youthful face flushed with anger. "My second spirit ring is you, which means we're one now. I can feel you holding me back!"

"This…" The Green Fruit Swamp Dragon faltered, its ethereal form flickering slightly. What she said was true. It had, indeed, actively prevented her from transforming, but only for her own good. "You must understand, although I intervened, I am now the Rider power itself. I must abide by the Kamen Rider rules set by Lord Yin Xiaoya. You already possess the qualification to become a Kamen Rider; as your heart grows stronger, transformation will come, sooner or later."

Luo Pupu began to tap her foot impatiently. "But I want to transform now! I don't want to be left behind by big brother!"

The Green Fruit Swamp Dragon felt a headache brewing. If it were still a wild soul beast, it might have succumbed to its violent urges. But now, as an integral part of a Kamen Rider, as a piece of Luo Pupu herself, its bestial instincts had been tempered by the wisdom of its two-thousand-year existence. It was now, in essence, a patient elder, trying to guide a headstrong child.

After a moment of deliberation, it offered, "Then let's compromise. I can allow you to transform into Ryugen."

"Really?!" Luo Pupu's eyes widened, her pout momentarily forgotten.

"But there are two conditions," the dragon added, its voice regaining its stern tone.

"What conditions?" she asked, her eagerness tempered by a flicker of apprehension.

"Lord Yin Xiaoya may not have told you, but Ryugen was originally intended to be a male Rider, and that cannot be changed. However, because I have given you everything, I can make adjustments to the appearance. The adjustment range can be significant, enough to transform it into a female Rider. But if you want to transform now, I can only manifest in the form of a male Rider, and you will not possess the power of idealism. Your lord should have explained what an idealistic surge is. First and foremost, you must accept this condition."

Luo Pupu nodded quickly. "If that's all, then there's no problem! I can agree, as long as I can transform immediately. What's the other condition?"

"My other condition…" The Green Fruit Swamp Dragon paused, gathering its thoughts.

After listening to the dragon's second condition, Luo Pupu's eyes widened in surprise.

"Are you sure?" she asked, her voice barely a whisper.

"I am sure. If you do this, it will not only accelerate your growth, but it will also greatly benefit Lord Yin Xiaoya. I think you should have no reason to refuse."

Luo Pupu lowered her head, lost in thought. Finally, she looked up, her eyes filled with newfound resolve. "The teachers will definitely not agree, so I have to do it secretly. And I really need to master your strength as soon as possible. Since you are willing to sacrifice yourself, will it be easier for me to absorb this spirit bone?"

The Green Fruit Swamp Dragon nodded. "That also requires you to master the power of my spirit ring as quickly as possible. I estimate you will need to reach level 26."

"I understand. I must improve my soul power as soon as possible." With a determined nod, Luo Pupu sat cross-legged on her bed, released her Wing Viper Dragon martial soul, and began to cultivate her spirit power. Big brother, I will definitely impress you.

The next day, rumors of the Kamen Rider power spread like wildfire throughout Shrek Academy. Even tales of the battle between Yin Xiaoya and Shi Zhi from the previous day were circulating among the students.

Upon hearing the official announcement that Yin Xiaoya intended to form a Kamen Rider team to challenge the Shrek Seven Monsters, the faculty and students of the academy immediately split into polarized camps.

Unsurprisingly, those who supported Yin Xiaoya were primarily elementary school students, who generally possessed weaker martial souls and yearned for a chance to prove themselves. Those who opposed him tended to be the students of the advanced department, who benefited from the academy's top-tier instruction and prided themselves on their superior abilities. Some of the elementary school students who had met Yin Xiaoya before sought out his residence the following morning, eager to be selected as Kamen Riders. But their efforts were in vain, as Yin Xiaoya didn't return to the accommodation arranged for him by the academy the previous night.

Time shifted back to the previous day. After securing Fang Xin's agreement at the banquet, Yin Xiaoya had asked Flender for a private space where they could speak undisturbed. Once they were alone, he presented her with a gray-white Advent Deck from Kamen Rider Ryuki.

"This is a Rider power that hasn't been unlocked yet. It grants you the ability to travel back and forth between the mirror world, similar to your Orb Dragon Mirror. I believe they can complement each other."

"Travel through the mirror world?" Fang Xin asked, her eyes wide with surprise. "Even my martial soul can't allow me to enter the mirror, but this Advent Deck can?"

"No, strictly speaking, only this Advent Deck can. Your Foreign Space isn't the mirror world; it's merely an extra-dimensional space accessible through the mirror. The true mirror world exists on the other side of any reflective surface, in a realm where everything is the opposite of what we see. This is one of the Rider power's unique abilities."

Fang Xin examined the plain card deck, devoid of any markings or ornamentation. She tried to pull out one of the cards, but it wouldn't budge.

"Brother Xiaoya, how do I unlock the power of this Kamen Rider? Do I need a soul beast, too?"

Yin Xiaoya chuckled. "You catch on quickly. Yes, soul beasts are required, but unlike the driver given to Pupu, this one doesn't need a sacrifice or a spirit ring. It needs a complete soul beast — no, strictly speaking, it can only be a complete soul beast."

The Mirror World Kamen Riders in the Kamen Rider Ryuki series were born after a human contracted with a Mirror Monster. In this Douluo World, where the power of Kamen Riders was sealed, that core principle remained.

However, the problem was that Mirror Monsters didn't exist in Douluo World. So, he had to first unlock the ability to summon a Mirror Monster using a soul beast listed in the system, so that the card deck associated with the Kamen Rider could be used. The soul beasts listed in the system corresponded to the Kamen Riders that already existed in the original series.

But Yin Xiaoya gave Fang Xin a blank Advent Deck. Yes, it was the original card deck that Ryuki had used before contracting with a Mirror Monster.

Unlocking this blank card deck wasn't particularly difficult. Fang Xin simply needed to find an appealing soul beast and convince it to willingly become her power. With her intervention, it would transform into a completely new Mirror Monster, unlike anything that had appeared in the original work. This process would unlock the blank card deck and complete the contract with Fang Xin.

If it weren't for the fact that the spiritual explosion of the original Kamen Riders, especially the Main Riders, could reach near-infinite levels, Yin Xiaoya would have preferred to use this card deck himself, as it was an item with immense potential.

Theoretically, the stronger the chosen soul beast, the greater its power would be after becoming a Mirror Monster, leading to a stronger transformed Kamen Rider. It was a pity that this item had a spiritual explosion upper limit of 5.00%, so Yin Xiaoya had to figure out a way to find an older soul beast, and then convince it to join Fang Xin willingly.

"...Although the upper limit of its spiritual explosion is very low, upgrading in various forms is also one of the ways to become stronger, in addition to the Rider Power's spiritual explosion. So you don't have to worry about its future at all."

Hearing that the Rider Yin Xiaoya was offering was so powerful, Fang Xin was overwhelmed.

"Brother Xiaoya, this is too precious... and someone as weak as me, how can I ever convince a powerful soul beast to become my contracted beast? You should give it to someone stronger."

"No, Fang Xin, no one else can do this; only you can. Have you forgotten the soul skill you just obtained?"

"Foreign Space... Do you mean finding a way to bring a soul beast into Foreign Space, and then forcing it to contract with me?" Fang Xin's eyes lit up, but she immediately became skeptical. "But Brother Xiaoya, my Foreign Space can't seal a resisting soul beast forever. The stronger the soul beast, the harder it struggles, and the faster my soul power will be consumed — unless it stops struggling, which I think is unlikely."

"It doesn't matter. That's just one method. If it doesn't work, we'll find another way."

"Okay. Since we're going to the Soul Beast Forest, shouldn't we ask some teachers from Shrek Academy to help us?"

Yin Xiaoya shook his head. "We're not hunting soul beasts as soul masters, so there's no need to mobilize the academy. Besides, compared to humans, I have a more suitable helper, but she's currently busy taking care of the children in the forest. Anyway, that's all I wanted to say. Go back and get some rest. It's your first night at Shrek."

Fang Xin blinked. "It's Brother Xiaoya's first day, too. Why don't you go back and rest?"

"I have an appointment with someone. I'm going somewhere later."

"Oh, then I'll go back to practice. Brother Xiaoya should rest, too."

After sending Fang Xin off, a figure emerged from the shadows, where they had been waiting patiently.

"Night will fall soon. Even if you want to go, there's no need to be in such a hurry. You could wait until dawn." Flender said.

"During the day, others might see me. If the Master knows, he'll misunderstand. Besides, it's quieter at night. For those who sleep forever, this time is the least disruptive."

Flender smiled wryly and shook his head. "This is the first time I've heard such a statement. You're truly an odd one. I can take you there, but as I said before, you have to tell me why."

Yin Xiaoya was silent, sensing an unquestionable seriousness from Flender. But to be honest, he didn't know how to explain the situation.

"My explanation would be rather complicated. Once we arrive at Senior Liu Erlong's grave, you'll understand. I also have some questions to ask you on the way."

"Oh? About what?"

"About the Martial Soul Hall and Bibi Dong."

***

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Advance chapters are in my P@|r3on - Najicablitz