Indeed, it was good that the bath was spacious. Since the girls could all wash at once, there was no need to wait long.
"We're done~ Cassian, Kazuma."
When Aqua informed us that the girls had all finished washing, Kazuma and I entered the bath.
"Every time I see it, I'm amazed at how big it is..."
"What is?"
"Ahaha, nothing."
Probably, Kazuma was referring to my thing. After rinsing off and sitting in the bath with Kazuma, he seemed to be pondering something and then asked me.
"Cassian, can I learn swordsmanship too? Since there are no quests because of the Devil King's generals, I have free time now."
I don't know what wind blew over Kazuma, but it seemed like a good sign, so I readily agreed. In my opinion, it was probably because the difference between me, who bought a mansion, and him was too great since we started together.
"Great! I'll teach you starting tomorrow."
After making that promise and finishing washing, we entered the room. I started drinking the potions I bought from Wiz's shop today from my inventory. I experimented with ones that had side effects like wounds or broken bones, but thanks to the [Abnormal Status Immunity] ability, there was no issue.
"I wonder if I can make this?"
I tried to check and make the potion with [Projection Magic] and [Naked Eye], but with [Material Manipulation], I could replicate the ingredients exactly, but I couldn't create the energy part contained within. In short, replication was impossible.
"That's a shame..."
I had no choice but to drink the remaining potions. Due to the potion effects, my level increased by 3 and I gained 4 skill points. It was questionable whether Wiz could continue to procure such potions, but since they were essentially free for me, I decided to check from time to time when I had the chance.
The next day, I woke up early, washed up simply, and made breakfast for everyone. Then, they were all very surprised by the taste of the meal. Especially Kazuma was delighted.
"Wow~ Cassian, when did you learn to cook? Like yesterday, it's really delicious."
"I lived alone for a long time in Japan, so that's why."
"I see."
"If you want Japanese food, just say so. If there are ingredients, I'll make it for you once."
"Really? Thank you~!"
After finishing the meal and resting a bit, we went out to the yard of the house and I started teaching Kazuma swordsmanship.
"So, in this world, the higher the understanding, the more you can save skill points, right?"
"Yes, for example, if a blacksmith came to this world, the points needed to acquire blacksmith skills would be less compared to ordinary people who know nothing."
"I see. Then it would be beneficial to acquire skills after practicing and increasing understanding."
"That's right. But it takes a lot more time that way."
"That makes sense. I understand."
As expected, Kazuma is smart in his own way, so he quickly understood this. I took out two Japanese swords from my inventory and gave one to Kazuma. Both were swords I had made in the One Piece worldview.
"Oh~ what's this?"
"It's a gift. I got it before. Today, since you need to get used to the sword length with your body, just focus on cutting."
I took out straw bundles rolled up, stuck them on wooden poles, drove them into the ground to set up several, and taught Kazuma how to hold the sword and swing it.
"First, the goal is to know the cutting range of the sword. Focus only on that and try cutting."
"Got it."
I had Kazuma do only that all morning, then went back into the restaurant to prepare the meal. Since I have [Telekinesis], it wasn't too difficult. And since the kids do the dishes on their own, I thought it might be more convenient to just cook. After finishing the meal and going out, I saw that all the straw bundles set up were tattered and cut.
"Oh~ you worked hard."
"Right? I think I'm getting a feel for cutting now. Plus, the sword is good, so it cuts well."
"Good, then try this."
I set up straw bundles again and tied a red string on top, attaching a bell at the end.
"This time, try to cut only the string without damaging the straw bundle and make the bell fall."
"Huh? Is that possible?"
"Yes, watch carefully."
I took out my sword and lightly cut the string, breaking it off.
Thud! Ding-a-ling!
"Oh~"
"With practice, you'll be able to do it quickly, so try hard."
"Got it. Is this also for understanding distance?"
"Correct. So you need to try cutting from as far away as possible and from close up."
Kazuma needed a lot of muscle training, but to first get him interested in swordsmanship, I decided to teach the technical parts before muscle training.
Three days passed like that, and Kazuma was always out from morning, practicing cutting the string.
"I succeed sometimes, but this is harder than I thought, isn't it?"
"Right? Now, come out and face me for a moment."
"Like this?"
I gradually closed the distance with Kazuma and stopped at an appropriate range.
"How about it? Do you think you can cut me?"
"No, it's still a bit far."
"Finally feeling it. That's 'zone'. It's your own range. All fights start from that zone."
"Ah~ I see!"
"Now, you can practice string cutting and swordsmanship training simultaneously."
From that day, I had Kazuma practice [Kingdom Samurai Swordsmanship] and string cutting at the same time. And finally, I got a call from the blacksmith and went to pick up the armor.
"How is it? Do you like it? I put some effort into making it."
Indeed, it was comfortable to move without any hindrance. Seeing that the metal parts were well finished, it was evident that a lot of care was taken.
"I really like it. This is the remaining payment."
"Hmm? It's more than promised?"
"I put in a little extra as thanks. Have a drink on me later."
"Oh~ thank you. I appreciate it."
Since I was here, I decided to analyze the minerals of Konosuba.
"And if it's not too much trouble, could I see various minerals?"
"Hmm? Why minerals?"
"Later, if I have a lot of funds, it might help when making weapons or armor, so I was wondering."
"I see. Come this way."
The workshop showed me a warehouse with piled-up minerals and explained them one by one.
"This is 'Adamantite' used in your armor too; it has very high strength, so warriors who prefer heavy equipment use it a lot. And this is 'Manatite', mainly used by mages to store mana. The higher the purity, the more expensive. Other than that, there are 'Orichalcum' and 'Coronatite', but I haven't seen them myself."
Konosuba had fewer varieties of minerals than expected; instead, the price seemed to be determined by purity. And the 'Coronatite' mentioned last by the workshop is an ultra-rare mineral, the energy source of the Destroyer. It can be said to be a perpetual motion machine in the Konosuba worldview, containing immense energy. And Orichalcum is literally the ultimate metal in fantasy worlds.
"I see. Thank you."
"If you want to know more, come anytime. You're always welcome."
I took the armor, said goodbye, and returned home. The next day, finally, Darkness and Chris came to visit.
"So this is Cassian's house."
"Long time no see. Come in, you can stay in the spare room."
"Thank you, I'll be in your care for a while. But what is Kazuma doing over there?"
Darkness asked, looking at Kazuma who was training.
"He asked me to teach him swordsmanship, so he's training."
"Oh~ I see! Then I'll put down my luggage and start training too!"
Darkness showed enthusiasm at the word "training", but it was obvious she would just do muscle training.
"First, let's have lunch and then do it."
"I see. It's already time."
"Chris, eat and stay. I have something to talk about."
Chris glared at me for a moment, snorted 'Hmph!', and followed Darkness into the mansion. It seemed the issue from that time still wasn't resolved.
We sat in the dining room and had the meal. This time too, I made and served the meal. Everyone enjoyed the meal, and while eating dessert, Darkness praised my cooking skills.
"I ate so deliciously. Did Cassian really make this?"
"Yes. I practiced cooking a bit when I lived alone."
Then, Chris, while drinking tea, spoke in a tsundere manner.
"You can cook a bit. But what did you want to talk about?"
"I obtained a Breast Enhancement Pill."
"What!!!??? Really!!!???"
"Yes, I didn't know either, but it turns out it's something you eat."
Pretending to take it out from my bag, I handed the shell-shaped Breast Enhancement Pill to Chris. Everyone looked at the Breast Enhancement Pill in Chris's hand curiously.
"This is the Breast Enhancement Pill? How do you eat it?"
"Open the shell-shaped cover and eat the red bead-like thing inside."
Hearing my explanation, Chris carefully opened the shell and took out the red medicine inside with her hand.
"Oh~ I see."
Chomp! Quickly~!
At that moment, suddenly Megumin snatched the Breast Enhancement Pill from Chris's hand by biting it and quickly ran outside.
"Gasp! Hey!!! Stop!!!"
Chris quickly chased after Megumin. Megumin seemed to be running away like crazy, but as a mage, she couldn't get far from the thief Chris and was caught in the yard. We all went out to watch.
"Spit it out!!! Spit it out!!!"
"Mmm!!! Mmph!!! Gulp!"
"No!!!!"
Chris tried to force her mouth open, but Megumin just swallowed it whole. Then, Megumin's chest started to grow a bit. Seeing this, Chris slumped to the ground and screamed.
"Argh!! My Breast Enhancement Pill!!"
Regardless of Chris's suffering, Megumin was overjoyed looking at her enlarged chest.
"Oh~ oh~ the legend of the Breast Enhancement Pill is true. My chest really grew."
"Y, yes... But there are men here too, so don't fondle it like that."
At those words, Megumin's face turned red and she quickly covered her chest. Kazuma, watching this, said to me as if it was ridiculous.
"Ugh... I can see why a country was destroyed because of the Breast Enhancement Pill."
"Hahaha, right?"
As I was laughing, Chris approached me with an angry face and snapped.
"Hey!! What are you going to do about this!!!???"
"Well, I don't know either, I handed it over as promised, it's your fault for not managing it properly."
When I stated the facts, Chris was left speechless and slumped back to the ground, shedding tears and punching the innocent ground.
Thud thud thud!
"Damn it!!!"
Seeing this, Megumin finally approached Chris apologetically.
"Um... I'll somehow compensate with money later..."
Then Chris glared at Megumin and said.
"Hey! Can you buy breast size with money!!??"
"T, that's not possible..."
Chris jumped up and tightly grabbed Megumin's chest, saying.
"From now on, this is mine!!!"
"Ah! It hurts!! I'm sorry!! Stop!! It's going to tear!!"
The situation was somewhat lewd, but looking at Chris engulfed in madness, I didn't feel that way at all. Everyone seemed the same; Kazuma just sighed, Yunyun was at a loss, and Darkness was excited, her face red, drooling, and just watching.
"Hehe~! Won't you give me some? Slurp~!"
After watching for a moment, I decided to stop this madness.
"Whoa whoa, calm down! It seems the Breast Enhancement Pill isn't the only one."
At my words, Chris quickly approached me and asked.
"Really?? Give it to me now!!"
"I don't have it now, I only found one."
"Then, you can find more later?"
"Maybe, or maybe not."
Hearing that, Chris made a face and grabbed my collar.
"Are you joking now!? Tell me immediately!! Can you get it or not!?"
Chris had definitely seen the effectiveness of the Breast Enhancement Pill with her own eyes, so she showed an incredible obsession.
"I don't know, but since only we know about the existence of the Breast Enhancement Pill, if rumors don't spread, the probability that I can find it is high, right?"
"How is that possible? Tell me the method!"
"No. And I gave you one as promised. If I find another, I plan to sell it for a high price."
"Grr! Then, if you find one later, trade it with the items I have!"
"Good! If they are items worth that much, anytime."
It seemed like things worked out well. I might be able to trade for the divine artifacts Chris has been collecting with Breast Enhancement Pills.
"You promise!"
"Yes."
"I'll stay here too now! Is there a room!?"
"Do as you like."
Chris decided to stay at my house until she gets the Breast Enhancement Pill, afraid it might be snatched by someone else. Darkness was very happy that Chris would be staying too.
Thus, the crazy day passed, and the next day, Megumin and Yunyun excitedly bought a lot of women's underwear and swimsuits together. It was probably with money borrowed from Yunyun.