Start by Eating Jake Jake no Mi

"Soul?" 3x

As they delved further into the discussion of achieving immortality based on biological knowledge, all of a sudden, Masa threw out an occult-like subject, which threw them off. 

"What do you think is a soul?" 

"This...?" 3x

If it was a science, then they could answer it since there was only a single answer, and the laws of physics are absolute. 

Yet, a soul? 

It was hard to describe them, but Masa didn't force them to answer and threw another question, "Leaving the description aside, do you think it exists?" 

"Of course." 3x

While they couldn't answer what a soul was, they could confidently say that it existed since it was something that differentiated between a living being and a non-living being. 

"From what we know, a soul is an incorporeal part of a living being, holding their spiritual essence and consciousness, yet, in the eyes of science, it is seen as an occult concept and something of superstition." 

Hiromi, Airi, and Shiori nodded at his words since even if they were magicians, they believed in science more, and in their minds, a soul is an occult concept. 

"Still, science has tried to prove that a soul exists. If I am not wrong, there was a scientist who weighed a soul at about 21 grams." 

"Is there such a research, Onii-sama?!" Hiromi was surprised. 

"Unexpectedly, there is, and there are also all other researchers, but all of them are disproved. Frankly, as long as we can control the soul, then we can achieve immortality since even if our bodies are destroyed, we can move our souls into a new container, such as a clone, but the problem is, can we even control it?" 

If a soul could be controlled, then there was no need for Masa to create a complicated method by manipulating hormones and whatnot. 

Unfortunately, a soul was the mystery of this world; no one could tell what it was, even if there was something known as magic in this world. 

Yet, the essentiality of a soul was vital for the immortality project. 

"However, even though science can't prove what a soul is or whether it exists or not, magic has proven that it exists." 

"Really?!" 3x

The three were surprised by Masa's revelation. 

"Yes." Masa nodded. "If you don't know, there is known as Astral magic, which allows their soul to be released from their bodies, and in Native America, there is also shamanic magic, which allows the magician to call the soul of their ancestors to make them stronger or fight alongside with them." 

The existence of the soul had been proven by the magician, yet despite this, the soul remained a mystery, and this was why Masa said, "Yes, this is difficult, but even so, it is also interesting." 

"Interesting?" 

"Yup. To learn the mystery of this world, I think this is why we, the magicians, exist in this world." 

Not as a weapon but as a creature that sought the truth of this world. 

Not to become the strongest but to uncover something that can't be explained by science and everything. 

Their purpose was to learn this mystery. 

Masa believed so, but the magicians in this world only thought of themselves as weapons, something to protect, or whatnot, and becoming stronger was their purpose in this life. 

Survive and reproduce.

Those were the purposes of a human, yet... Masa believed that a magician had a greater role and a greater purpose for why they existed in this world than just being used as dispensable tools or livestock that would be thrown away after they lost their uses. 

Yet, somehow, along the way, they lost that purpose and mingled with humans, throwing a tantrum, hoping to join them as if they were afraid of being isolated. 

No, it should be otherwise! 

It shouldn't be the magicians who begged, but it should be those humans who begged them! 

Magicians shouldn't be the livestock or the tools for the humans! 

Instead, they should be the master of this world! 

Yet, Masa knew that this was still early, and he shouldn't show his frightening ambition. Instead, he showed an innocent smile and said, "Well, I am sure that people will laugh at me after saying that, so keep that a secret, okay?" 

"No... no one will laugh." 

Yes, whether it was Hiromi, Airi, or Shiori, none of them laughed. Instead, all of them were in a daze, and a door suddenly opened within their soul, and a bright light appeared before their lives as if a lighthouse guided them who had been lost in the dark ocean. 

Similar to the others, they only thought of becoming stronger, better than magic, then searched for a man to marry and then make children. 

Such were their lives, yet they never questioned why they were born as magicians. 

Yet, Masa thought of that; he kept thinking, and he found the answer. 

However, they knew well that this step wasn't easy, and they also understood why Masa tried to become stronger and stronger. 

Still, as a woman facing such a man, a natural reaction occurs within their biology. 

'I want him to impregnate me.' 2x

Yet, the two girls knew that they could only bury this feeling and the natural reactions of their bodies, especially when they knew well that with their status, it was impossible for them to openly show their interest toward him. 

Yes, their role had been determined from the beginning, and if they loved him, they should follow that role obediently instead of following their desires and impulses before they were burnt and ended up with regret. 

However, watching Airi, who could openly express her feelings and showed her wish to be impregnated by him, the two sighed helplessly. 

The two of them could only be the supporting characters, and Airi was the main heroine. 

Still—

"Enough of this complicated talk. Let's have fun!" 

"OOOOOOOOH!" 3x

Yes, they shouldn't think of complicated matters since their purpose in coming to Yokohama was to have fun.

Hiromi and Shiori also thought so, but Airi wished for them to become older as soon as possible so that way, they could marry, and they... they could have sex and have children. 

Shy, yet admonished herself due to her pervy thoughts, which weren't suitable for a woman of her status and position. 

However, as Airi loved him so much, she just couldn't control this feeling of hers, so if possible, before the end of this trip... she wanted a kiss on the lips, she thought. 

Yet, as expected, similar to all Masas in various worlds, Masa and the others found trouble on this trip. 

No, it should have been the trouble that came to them. 

Regardless, this trip to Yokohama is far from being simple.