Without having to ask, Serafil knew that this uninvited guest was definitely not a good person. She exuded a thick murderous aura.

Serafil felt an unprecedented sense of crisis. This secret room was known to only one person besides herself, the woman who had taken her place to be intimate with Murin Tristan.

Moreover, numerous soundproof barriers had been set up here. The purpose was to keep this secret from ever leaking out, but now it had instead put her in a difficult situation.

No matter what happened underground, it was hard for the people above to know. Besides, she couldn't expose the secret of the stand - in. Otherwise, those subordinates who were devoted to her might turn against her, feeling deceived.

From the perspective of a battle, Serafil was a magic knight, but at the moment, she didn't have a mount. This alone reduced her power by several levels. Secondly, the secret room was less than two hundred square meters. The narrow environment was not conducive to the display of a knight's abilities.

On the contrary, the assassin seemed to be in her element. Judging from the way she entered the secret room, she must be a top - notch expert.

It was unrealistic to leave using the teleportation array. Before the teleportation array could be activated, the assassin, who was watching eagerly, could have killed her several times over.

Using her charm skills on the assassin was also useless because the assassin seemed to be a woman from her figure.

Well, the only remaining option was to kill the opponent!

Serafil was indeed an ambitious person who had seen the world. After a moment of slight panic, she immediately calmed down.

With a flick of her hands, a flame gun and a glittering golden shield appeared in her right hand and on her left arm respectively.

Serafil was a magic knight who practiced both fire and gold magic. She had the powerful attack power of the fire element, and at the same time, the gold - based Dou Qi provided excellent defense. Such a combination of Dou Qi was quite troublesome.

Of course, the assassin wouldn't back down because of this. Their profession determined that the tasks they took on were usually of high difficulty.

With a movement of her body, the assassin turned into a long afterimage like a ghost and rushed towards Serafil.

A Shadow - rank assassin!

Serafil was shocked again. Her expression became even more solemn.

She raised her left palm, and a purple fire wall covered the assassin.

The fire wall was as large as the cross - section of the secret room.

Since the narrow space was not conducive to the knight's performance, she should make full use of the wide - range attack advantage of a mage to completely trap the assassin.

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Even the most skilled assassins had relatively weak defenses. Even a Saint - rank assassin would find it a bit difficult to resist the purple flames with their physical body. It was sure to give her a hard time.

Sure enough, the assassin frowned and had to slow down. She redirected her power to defense, and a faint layer of protective Dou Qi rose on her body surface.

The second, third, fourth, and fifth fire walls came one after another and soon formed a raging tide of flames.

Fire restrained wood. When the purple fire encountered wood - based Dou Qi, it didn't go out but still burned brightly. The assassin had to further increase the intensity of her protective Dou Qi to resist.

However, overall, it was still Serafil, who kept conjuring up fire walls, who was more exhausted. After all, her attack was comprehensive, and the consumption of her spiritual power was astonishing.

If it came down to a war of attrition, she would be the one to win.

Just as the assassin decided to be patient and engage in a war of attrition, her vision blurred. She didn't know if it was an illusion or something else, but the Serafil in front of her disappeared. The secret room was empty, with only a faint glimmer of gold.

"Puchi!"

That glimmer of gold shot towards the assassin's heart like a shooting star. After piercing through it, the gold revealed its true form. It was a golden long spear, and Serafil, who was shining with golden light all over.

Serafil showed a victorious smile. To prevent situations like today, she had been painstakingly practicing a special skill.

Based on the mage's Wind - Riding Technique and combined with the knight's explosive power, the speed she could reach at the moment when her power was pushed to the limit was much faster than when she was on a mount. It even surpassed the Flash Spirit Afterimage of a Shadow - rank assassin. Serafil named it "One - Hit Kill".

The speed that exceeded that of a Saint - rank assassin, combined with the knight's charge, brought immeasurable destructive power, living up to the name of "One - Hit Kill".

This name had another meaning. If she couldn't kill the enemy, she would be the one to die.

Because when activating the "One - Hit Kill", the momentary power load far exceeded her own limit. After that, there would be a period of power exhaustion, and her defense would be almost zero for several seconds.

Fortunately, she succeeded. She successfully trapped the assassin with the mage's Flaming Tide and then used her killing move. Serafil was more than 80% confident.

Smart people know how to use the environment, while geniuses can turn a disadvantageous situation into an advantage. Serafil was a genius in martial arts.

This secret room greatly restricted the abilities of a knight, but it also created favorable binding conditions for Serafil.

"Huff! Huff! Huff!" Serafil gasped, sweating profusely. Just half a second of exertion had soaked her clothes, showing how terrifying her explosive power was.

As the golden light on her body gradually faded, a sound of breaking wind came from behind her.

Was there a second assassin!?

Serafil's face turned pale with fright. She turned around and saw another black - clad assassin rushing over, leaving an afterimage.

No, it was the same person!

Their figures, postures, and even auras were exactly the same.

Could it be that the one she had stabbed just now was just an afterimage?

But Serafil clearly felt that the long spear in her hand had indeed stabbed into a solid body, and the stabbed assassin was still behind her. No afterimage could last that long without dissipating.

At this moment, Serafil had completely lost the ability to resist. She could only let the assassin's hand land on her shoulder.

"Click, click!"

Serafil was horrified to find that the place touched by the assassin immediately lost its sensation and began to petrify. Then it spread to other parts of her body.

Besides her body, even her power seemed to be petrified and was disappearing bit by bit.

Serafil's consciousness gradually blurred. She didn't know if she was seeing things, but she saw the assassin merge with the dead assassin and become one person.

In the last moment before her eyes were petrified, Serafil saw a pair of eyes, mist - like bright eyes.