The sex that began early in the morning continued into the deep night.

Serena and I had decided not to hold back our orgasms for the sake of reconciliation. Thus, I ejaculated dozens of times over the course of more than 10 hours.

Pleasure had dulled my mind to the point where the world seemed to spin, and I couldn’t tell what time it was or how many hours had passed. I was solely focused on indulging in Serena’s flesh.

As a result, even my C-grade magical ability, which had made drastic progress until now, reached its limit. Having exhausted all my magical power, I fell into a faint-like sleep.

The last thing I saw was Serena’s face, sucking on my tongue and looking at me with eyes filled with affection.

“Ssshh—♡ Good night, Master♡”

“……”

When I woke up, I first grabbed my smartphone to check the time.

[08:12]

:12 in the morning. I had spent an entire day on sex.

“Sigh……”

My penis still felt somewhat numb.

When I opened my messenger app, there were messages from Baek Seona.

「Doha Oppa.」

「Why aren’t you contacting me today?」

「Please message me even if it’s late. I’ll wait without sleeping.」

「Are you still doing something?」

「 It’s not something serious, right?」

「Is it okay if I call you?」

「If there’s no reply even after an hour, I’m going to call you, okay?」

「Oppa, why aren’t you answering the phone.」

「Please reply quickly once you see this.」

「Please….」

“……Darn.”

There were dozens of missed calls since 3 a.m. They were all from Baek Seona.

First, I called her to calm down a sobbing Baek Seona.

It seemed she was worried that something had gone wrong since the last news she heard was about a mutant zombie appearing nearby, and then the communication was cut off.

Having soothed Baek Seona, Serena, who had been asleep next to me while she embraced me, woke up.

“Umm… Master…”

Serena looked for me as soon as she opened her eyes.

She extended her large, natural breasts and stretched widely.

“Yawwwn! I feel more energetic today! Maybe because I received lots of love from Master…?”

Despite tasting those breasts to my heart’s content all day yesterday, I still wanted to touch and suck them after waking up. However, I couldn’t afford to spend another whole day on sex.

“Put on your clothes, Serena. We need to wash up and get going.”

“Yes, Master.”

Serena, who was hurriedly getting dressed, suddenly exclaimed, “Ah!”

“What is it?”

“When Master ejaculated for the last time yesterday…!”

“Shh. Keep it down, Serena.”

I belatedly realized that we were in the middle of the second floor of a department store, in a room with curtains that didn’t block sound at all.

It wasn’t the best environment to loudly discuss “ejaculating.”

“So, what happened then?”

“Something like a notification message popped up. It said that some ability had awakened, but…”

“What!?”

Serena had awakened an ability?

Indeed, up until now, Serena had fought with her high overall stats and traits, but she never had any special abilities.

Nevertheless, there were no opponents who could match her due to her overwhelming specifications.

But now she was awakening a special ability? I couldn’t stop at this.

“Status window.”

I could view Serena’s status window directly through mine without having to share it with her.

I went into Serena’s information by touching her name in my special ability [The Power to Turn a Real Doll into a Human] that I was managing.

Ding-!

[Status Window]

Name: Serena

Master: Kim Doha

Age: 20

Height: 168cm

Weight: 51kg

Strength: B+

Durability: A+

Stamina: A

Magic Power: B-

Overall Ability Rating: A- Traits: [Perfect Harmony: A], [Clean Body: A], [Obedience: A+], [Devotion: S+]

Special Ability: (NEW) [Knight's Vow: C-]

Serena’s overall ability score had boasted remarkably high numbers since she first awoke. It started at B- grade.

And now, more than three weeks since the zombie apocalypse began, her overall ability score had grown to A- grade.

Considering the fact that ability users in the community concluded that the higher the grade, the greater the gap between grades, and the harder it was to rise in rank, Serena’s abilities were truly transcendent.

And now a special ability was added to that.

Its name was [Knight’s Vow]. Its inherent grade was C-.

It was the same grade as Baek Seona’s [Land of Hope].

I immediately touched the special ability to take a closer look.

Ding-!

[Knight's Vow]

Ability Evaluation: C-

Through a firm vow, you form a bond with the master you have chosen. When within a certain distance of the bonded target, you can share a portion of any fatal damage they receive. You can arm yourself in the 'White Knight' state for a set period. The duration depends on the user's magic power, ability rating, and adjusted ability score.

“Oh…”

First, there was the effect of forming a bond with the master to share the damage that was received.

Serena’s master was me. In other words, it was an ability that reduced the damage I received.

Serena’s durability and stamina stats were particularly high, so what could be a fatal blow to me might be just a minor shock to her. This was definitely a good ability.

The problem was this ability to arm oneself in the ‘White Knight’ state…

The description was too vague. It seemed difficult to make a judgment without seeing it with my own eyes.

However, since it was rated at C- grade, the same as [Land of Hope], it shouldn’t be a bad ability.

“But… How do we form this bond?”

At my question, Serena suddenly kneeled down with a graceful motion.

The angle looked right as if she had seen it somewhere before.

Even in her casual short-sleeved shirt and jeans, an atmosphere of reverence like a knight facing their sovereign emanated from her.

“Master, I wish to serve you as my lord for the rest of my life, raise your honor, and devote my humble body and mind to fulfilling your will. Will you accept my wish?”

As Serena finished speaking, a system window popped up.

['Serena' has requested a bond of 'Knight's Vow'.]

[Accept / Decline]

“I’ll accept, Serena,”

I answered, touching Accept.

Ding-!

[You have formed a bond with 'Serena'. You will now receive the effects of 'Knight's Vow'.]

Serena bowed her head even deeper and said,

“Thank you, Master. I vow to repay the trust you’ve placed in me with nothing but truth and bravery.”

She was not joking. I was slightly overwhelmed by that solemn vow.

“…Thank you.”

But the moment I answered, Serena lifted her head and smiled widely. Her bright expression was the same as I always knew her to have.A peaceful morning at the Jeongbalsan Station department store.

Everyone was gathered at the restaurant corner, having their meal.

Serena and I also entered the dining area, but something… something felt off.

All the people looking at us were smiling ear to ear, even giving us thumbs up as they passed by.

‘… What’s going on?’

Until then, I hadn’t given it much thought.

‘It must be because we caught the mutant zombies.’

While getting our meal, the lady serving the food gave extra meat side dishes to Serena and me.

“Eh? Aren’t you that young man Doha! You two must have used a lot of strength, so you need plenty of nutrition to replenish!”

That was what she said.

‘…She must be talking about the energy we spent catching the mutant zombies.’

By this time, I had a vague idea of what was going on, but I consciously pretended not to know.

“Haha. Thank you.”

“Wow! This looks delicious! Thank you!”

As we were looking for a place to eat, I saw Jin Serim sitting alone nearby.

She looked somewhat sleep-deprived, with a haggard face and deep dark circles under her eyes.

We sat at the table next to where Jin Serim was eating alone.

“Serim, didn’t you sleep well? Your face looks very tired.”

“Eh, eh? Uh, uh…!”

Jin Serim seemed not to notice us as we sat next to her, and she was visibly flustered when I spoke to her.

“Uh, yes. I, I slept well! Yeah……”

“……I see.”

“I slept well too! Hehe.”

Up until now, Jin Serim, who had always been confident and charismatic, for some reason, blushed and couldn’t look me in the face.“……”

We didn’t say another word and silently continued our meal.

As we were eating, the man who had been on the front line fighting zombies last night passed by.

The man looked at us, smiled, and said,

“Ah, isn’t this Doha? I was really surprised yesterday!”

I raised my head and answered indifferently.

“Yes? What is it?”

Seeing me feign ignorance, the man chuckled mischievously.

“What is it? Hehehe. The noise lasted for more than 10 hours, so loud. Even if you wanted to, you couldn’t ignore it, really! Serim worked hard all day guarding Doha’s door yesterday, hmm.”

“……”

I looked at Jin Serim without a word.

She turned her head as if she hadn’t heard anything and silently ate her meal.

The man handed me two chocolate bars he had been holding and said,

“You fight well, and that, too, you do well! There was no separate latch, was there? Eat this and use more strength! I have nowhere to use mine.”

With that, the man left.

“……”

In the midst of the suffocating silence, Serena asked me with an innocent expression,

“Doha, what does ‘no separate latch’ mean?”

“……”

I quietly put my spoon down. I felt like I was going to be sick.After finishing the meal, I took a shower in the department store’s staff shower room. The prying eyes of the men glancing at my body in the changing room felt piercing.

Feeling refreshed, I went back to find Jin Serim, and she spoke first.

“You, you don’t have to worry too much about it. I was wearing earplugs in front of your room the whole time, and I chased anyone away so they wouldn’t get too close……”

“Ah, yes……”

What was done was done, and there was nothing that could be changed. I had already decided to brazenly move on. My mind was perfectly armored.

“I might have heard some noise, but that’s something couples do.”

“Th, that’s right……”

I quickly brought up the main reason I had sought out Jin Serim.

“More importantly, I want to know about the forces that have occupied the military bases near Daehwa Station and Paju. That person who was in the patrol unit, perhaps……”

“Ah, right! I was going to introduce you to the guy who fought with the guys from Daehwa Station!”

“Yes, that’s right.”

Jin Serim suddenly stiffened and said,

“Actually, it’s someone you’ve already met. The guy who fought with the mutant zombies the day before yesterday and survived.”

“Ah, that… Byungho?”

“You remember. Yes. Watching his patrol teammates die seems to have traumatized him, and he’s having a tough time now. But… with you and Rena, since you avenged them against the mutant zombies, it should be okay.”

“…… Let’s go meet him.”

We all headed towards the department store’s infirmary.

Byungho was lying motionless in a bed with the curtain drawn, with a vacant expression on his face.

Jin Serim stepped forward and began to explain.

She introduced me as the one who had predicted yesterday’s attack by the mutant zombies and prevented any deaths.

A faint spark of life appeared in Byungho’s eyes, which had been vacant and unfocused. He looked at me and bowed his head deeply.

“Thank you for avenging my patrol teammates. Doha-nim, Rena-nim.”

I immediately waved my hand.

“It’s alright! Please raise your head; it must be uncomfortable for you. Instead, I have something I’d like to ask.”

“To me? What is it……?”

“I heard that you had fought directly with the forces near Daehwa Station that are stationed at the military bases.”

“Ah, yes, that’s correct.”

“I would like to know about the situation at that time, the scale of the various forces that have occupied the military bases, the state of their defense, the abilities of their key power players, or anything else you might know.”

Byungho nodded his head and began to explain meticulously.

While he didn’t know the details about the abilities of the military base forces, he did have experience fighting enemies armed with automatic rifles.

That was a very valuable experience.

“You were shot? With a K2 rifle?”

“Yes. Six 5.56mm bullets hit my back.”

“……Given the power of the rifle, there’s a very high chance of penetration wounds. Was the distance quite far?”

Automatic rifles were more powerful and capable of mass killings than most people thought.

If hit at close range and at a right angle, they could penetrate bullet-proof helmets and go right through a person.

“No. It was close range, not even 30 meters away. After that, I hid between buildings so I wasn’t hit again. I think it was probably because my durability stat is high, so the bullets didn’t penetrate deeply. The wounds were not very deep.”

“…… That’s amazing.”

Bullets not penetrating because of high durability? Did he have some iron-like properties?

I asked in admiration.

“If it’s not rude, may I know how high your durability is?”

“Of course. It’s E+ grade.”

“……”

…Bullets didn’t penetrate easily with just an E+ grade?

My durability was a D grade, and Serena’s was an A+ grade……?