Haru didn't kill Semiramis before, but rather, he put her into an Ocean directly after he had attacked her with his telepathy then created an illusion that he had died.
Haru felt that it was a bit of a pity to kill Semiramis since her ability was just too awesome.
Poison.
Semiramis's poison was very strong and it had a lot of function.
If Haru could control her well or make her into his allies, then, without doubt, Semiramis would be one of his greatest help in the future.
Unfortunately, Semiramis's personality was just too... selfish?
Haru knew that Semiramis was very selfish and he knew that the reason why Shirou was able to control Semiramis was because he had promised her to become the queen in this world, however, at the same time, he had to admit that Semiramis was a bit stupid.
Haru was also wondering why Jeanne didn't say anything even though she knew that Semiramis didn't die. He knew that he needed to talk to Jeanne later about this matter.
"Hey, answer me! Or do you feel that I am so beautiful that you can't talk about anything?" Semiramis asked with a smile. When she passed out before, she was startled when she suddenly appeared in a place where nothing but water, but then she heard his voice and knew that she was alright.
The only reason that Semiramis could think why Haru didn't kill her was that he was attracted by her beauty, after all, she was really confident in her beauty.
Semiramis's beauty was written in legend and it was also the reason why she was able to become an Empress of Assyrian. The previous king of Assyrian fell in love with Semiramis and forced her ex-husband to give her to him.
In dilemma, Semiramis's husband decided to commit suicide and in the end, Semiramis became the queen of Assyrian by marrying the King, however, after she married the king, she quickly poisoned the king and became the Empress of Assyrian.
And at the same time, Haru realized something...
'Eh? Am I similar to the King of Assyrian?'
Haru realized that Shirou was similar to Semiramis's ex-husband and he was similar to the king, who forced Semiramis's husband to give her to him.
"......."
Haru was speechless at that moment.
"What's wrong?"
Semiramis asked, looking at Haru weirdly since this boy kept showing an interesting expression from time to time.
"Well, what should I call you? Aunt?"
A blue vein appeared on Semiramis's forehead, showing how furious she was at this moment.
"...Do you want to die?"
"Then I will call you big sister, is that alright?"
"Then call me big sister."
Semiramis felt comfortable at how he called her and nodded. She was called "Empress" and along the way, but no one had called her big sister since no one dared to do so.
Haru and Semiramis were quite similar after all and even though they weren't family, it wasn't wrong for him to call her big sister since her mother was a fish-goddess and his body was also the body of Aquaman.
Even if they didn't have blood relations or whatever, they could be called a family too.
"Since you're my little brother, then I hope that you can treat me better. I know that you have a lot of money, so buy me a country," Semiramis said without hesitation.
"........"
"...Do you want to enter the "Ocean" again?" Haru asked.
"Hmph! I am not scared! I am half a fish-goddess after all and that place can't hurt me," Semiramis said.
If it was another servant then they might be troubled by Haru's "Ocean" ability, but Semiramis was a half fish-goddess which made her capable of breathing underwater.
Haru wanted to say if he wanted to kill her then he could do it anytime, but he didn't intend to fix her misunderstanding. He thought for a while and said, "Well, if you want to make my "Ocean" into your kingdom then I don't mind."
"Eh?"
Semiramis was surprised and looked at Haru with a suspicious expression. "Really?" She saw how big Haru's "Ocean" was and if she filled that space with all her subjects then...
Haru nodded and said, "Yes, but in exchange, I want you to teach my girlfriend your poison."
"......"
Semiramis's good mood instantly disappeared after she had heard his words.
"Do you know you'll be hated if you can't mention another woman when you talk with a woman?" Semiramis said with a frown.
"A woman? Where?"
Haru looked around in confusion.
"......."
"If you dare to joke around, then I will summon Basmu here."
"......."
"I was joking." Haru smiled and said, "But still what do you want to do? If you don't want to teach my girlfriend then I can return you back to Throne of Heroes."
Hearing Haru's words, Semiramis knew that it was a naked threat, but at the same time, she was wondering whether her charm was really that low. Even though she held contempt for those men who would claim other women without a second thought, she had seen that this boy still had a bottom line and she also understood why there were a lot of women that had fallen for him.
In truth, it was very simple to make a woman fall in love with you, as long as you had looks, money, and talent, then those women would come toward you without hesitation.
It might sound vulgar, however, a man was also the same, and a man was even more vulgar, after all, a man only looked toward a beautiful woman.
If a woman was ugly then there was no way for those men to give them a look, right?
In the legend, the reason why Semiramis fell for Ara the Handsome was that he was handsome, and in this arc, the reason why Semiramis fell for Shirou was that he wanted her power, not her appearance like those men that came to court her in her life.
What Haru did was combine two reasons why Semiramis fell for two different men.
Haru was handsome and he wanted Semiramis's power so the result should be obvious, right?
"If you accept my request then I will tell you about my origin," Haru said.
When Semiramis heard Haru's words, she became interested and quickly took off her clothes before entering the hot spring pool.
"!!!"
Haru was dumbfounded and quickly asked, "What are you doing?!"
Semiramis was amused by Haru's reaction and said, "Isn't it part of the culture to take off one piece of clothing before they enter the hot spring pool? And don't you feel happy to see my body?"
Haru quickly turned and said, "I am gentlemen!"
Semiramis snorted and said, "Is there a gentleman that dates four women at the same time?!"
"......"
Haru knew that he was scum and he also felt dumb to call himself a gentleman, however, even if he was scum, he still had a bottom line. He didn't look at Semiramis and asked, "Do you agree?"
"If your talk can interest me then I will teach your little girlfriend about my poison," Semiramis said.
"That's good."
Haru nodded and didn't know whether Semiramis would lie to him or not since he could kill her anytime, however, he didn't want to force her since his weakness was a woman and he had always been very gentle toward them.