My daily life of exorcising demons and falling in love with a witch.

The first spell enchanted Yixing's wooden sword with flames.

The second step enhanced his strength and stamina.

The third, and most important, layer—was imbued with a protective spell.

The spell was connected to Erina's soul and life.

All harm suffered by righteous acts will be greatly reduced.

The price to pay is that Erina will bear the same injuries and pain that Yoshiyuki suffers.

"Go, Yoshiyuki!" Erina finished casting the spell and exhaled. "I'll be there to support you!"

"Uh... wait a minute, young lady! Why does today's protective spell seem different?" Yoshiyuki paused for a moment, then quickly said, "If I'm not mistaken, is this the kind of spell that will hurt you too? No, let's switch back to the normal one!"

"Hmph, I'll use whatever I want, you can use it obediently! I won't change it, what if you, this worthless servant, die?" Erina said with her hands on her hips, speaking with righteous indignation.

"But my duty is to protect you, young lady! What if you get hurt using this kind of spell?"

"As the master, I naturally have a duty to protect my beloved maid! If you're gone, who will cook for me?"

"Oh... but I'm not a maid!!!"

"Just come home tonight," Erina said with a mysterious, mischievous smile. "If you come back safely, Master will let you wear women's clothes, okay?"

"NO!" Yixing suddenly felt a little flustered: "Don't make such a false promise, okay?! I would never cross-dress!"

"Stop talking nonsense! Just get on with it!" Erina urged, giving him a push and complaining, "If you don't want me to get hurt, be careful!"

Left with no other choice, Yixing, with a touch of emotion, rushed to the front lines, wielding his wooden sword and slaying one demon after another.

Erina followed closely behind, using spells and summoned longbows to kill enemies from time to time.

Yi Xing's wooden sword was not sharpened, but with forceful swings, it could still sever the demon's body.

Moreover, Erina had also imbued it with flames—which could not damage the wooden sword at all, but could ignite anything it touched.

Even water would be evaporated by the raging flames.

The speed of Yi Xing's actions was incredibly fast.

He continuously and precisely slashed his blade, cutting down enemies at lightning speed and with terrifying power, severing weapons that tried to parry his attacks.

However, although he could launch attacks on several targets in succession at an almost teleporting speed, he always stayed by Erina's side, killing approaching enemies, knocking down flying arrows and thrown weapons for her, and never straying too far from his master.

Yi Xing's activity range is limited to within three meters of the young lady. If the enemy exceeds this distance even slightly, he will only attack with sword energy and will never pursue them any further.

When deciding on a position to move or advance the battle line, he would tell the young lady, and after Erina was ready to move without needing to cast a spell, he would advance at a speed that she could keep up with.

While this fighting style somewhat limited Yoshiyuki's effectiveness and slowed down his kill rate, it ensured Erina's safety to the greatest extent possible.

Her safety is what Yixing values ​​most. Nothing else matters.

Even the slightest touch of a demon on its master would be considered a serious dereliction of duty by Yixing and is unacceptable.

Given that the young lady was so worried about his safety that she used such a powerful protective spell, Yixing was also extra careful not to get hurt.

Erina's combat strategy was to hide behind Yoshiyuki, cast spells to kill enemies in large numbers, and create a safe combat environment for him.

The archers in the distance were being dealt with by Shinshoujima Village, so Erina focused on eliminating the threats around her and dealing with the enemies at mid-range.

Because Erina possesses a wide variety of spells, she prefers to use non-lethal spells that are quick to cast and consume little spiritual or mental energy to assist Yoshiyuki in efficiently killing demons, rather than direct-kill spells that often have long casting times and consume a lot of spiritual and mental energy.

For example, she can use long-range, targeted explosions to stun large numbers of enemies and instantly take control of the situation.

You can also use tactics to force the enemy to move, disrupt their formation, or even push them towards Yixing.

It can also disarm enemies of their weapons and shields, rendering them powerless to fight back when faced with righteous acts.

It can even drive opponents into a frenzy, causing them to turn on each other.

Many of the powers that the Witch of the Underworld can control come from the Land of the Dead.

And that is the nature of this magic.

Although Izanami is the ruler there, Yomi was born even earlier than Izanami.

Its power is neutral, neither good nor evil. Anyone with the ability can use it.

However, because the death aura of the power of the underworld is too strong and its nature is unstable, and because Hades himself is full of hostility towards the mortal world, the spells of the underworld system are quite dangerous and can easily backfire on the caster.

Even Erina had to concentrate fully when using them and dared not be distracted.

The Berserk spell should be used with extreme caution against humans, as its harmful effects are far too great.

Enemies enraged by this spell will become significantly more powerful. An ordinary person subjected to this spell might be able to kill several ordinary people of similar strength with their bare hands. Even if the caster survives, they will be charged with murdering multiple people.

Even if they are ultimately proven innocent, this person will be practically devastated. The likelihood of them experiencing a mental breakdown is extremely high.

Yoshiyuki and Erina worked together very well.

Their sum of one is far greater than two.

To remain stationary and calmly cast spells in front of so many enemies requires considerable mental fortitude.

However, Erina remained fearless and unwavering because she believed that Yoshiyuki could protect her.

As long as he still holds the knife in front of him, Erina feels completely at ease.

This is a sense of security that no one else could give her.

As for Yixing, he is also full of fighting spirit and motivation because he has a master to protect.

His efficiency in killing enemies alone may have decreased, and he could not kill as freely as Wu Lili, but because he provided Erina with a safe environment for casting spells, he was able to fully unleash the power of the Yomi Shrine Maiden.

Years of training and serving the young lady have made Yixing deeply realize that only when the two of them are together can they unleash their greatest power.

Even if you want to stretch your arms and legs freely without restraint, you must remain restrained and always prioritize Erina's safety.

For example, if an enemy is fleeing, even if there are no other enemies around, he will never abandon the young lady and chase after her alone as long as Erina can't keep up.

Otherwise, what if this is a diversionary tactic?

In both Kendo and Kyudo, there is a concept called "Zanshin" (or "residual spirit"). Even if a target is killed in one strike, one must immediately regain balance and assume a balanced offensive and defensive stance to prevent the opponent from being completely dead and launching another desperate attack.

As the young lady's protector, he always adhered to this principle and applied it in many situations.