After the dispute between Miyuki and Irina was over Tatsuya and Miyuki came back home and the very next day they went for buying the things that Miyuki required. For some reason Grace also went with them and was the most excited among the three of them. Seeing her enthusiasm the people who were around them kept on glancing them from time to time.
After going home that day Miyuki was way too tired so Tatsuya just explained to her about magic and all and they decided to practice it daily.
Tatsuya also told her made a mental link with Miyuki so that they could talk to each other through telepathy. But what Tatsuya didn't took into consideration was that through his mental link even Kurumi was able to talk to Miyuki and therefore Tatsuya had to explain about their relationship.
Miyuki and Kurumi argued for quite a while about the whole wife thing and finally settled on sharing him.
From that day onwards Miyuki started sticking to Tatsuya more and more. She would sleep with him and even took baths with him as well. Tatsuya had no problems with it as in his eyes Miyuki was still a child.
Miyuki was also trained by Tatsuya from that day too. He would take her for morning workouts to make her body a bit stronger, make her feel magic as she was still not accustomed to it, train her in close combat for self defense and much more. The only thing was that even though he himself does not have to train this much, he still was a training maniac and Miyuki had already started to experience it. Though she was trained to the extreme she knew that Tatsuya was only doing it because he cared about him. Tatsuya too felt that it was important as even though he was not allowed to tell her what would happen in the future, he still knew that if Miyuki would not be prepared till that time might lead her to various life and death scenarios.
Miyuki was also very talented even though she did not had Tatsuya's monstrous growth rate she was still very talented. She absorbed everything that Tatsuya threw at her just like a sponge and her conviction to make Tatsuya notice her more drove her even faster to reaching her goal. Because of this training speed Tatsuya also decided to add sword training in her regim as well.
Tatsuya too didn't stood still he himself started practicing all sorts of weapon and martial arts, he even started learning about various strategies about fighting from Kurumi or from books about various generals which he could get from library or from Touji. He also started to resume his studies so that he could gain as much knowledge as he could get because he knew that in the future it would be very difficult among the various events that would take place.
Seeing her Tatsuya like that Miyuki's and Kurumi's admiration for Tatsuya grew even further. Now Miyuki and Kurumi had set aside their differences as they knew that they would be with Tatsuya in the future and now tried to help each other as much as they can. Kurumi even started to teach Miyuki about chakra but found that Miyuki could only use chakra to enforce her body and could not use ninjutsu, genjutsu or taijutsu.
Though Miyuki was disheartened at first but with the help of encouragement from both Kurumi and Tatsuya she overcame it and decided to excell in her own forts and made her onii-sama proud.
Tatsuya also made a special training room like the hyperbolic time chamber with his space time magic and started to practice all the weapons and moves he had created from different animes and hell firing your own KAMEHAMEHA was his greatest moment of his life. It was just that it was everyone's dream from the childhood and now he had accomplished it.
During all this time Irina had also become conscious of Tatsuya and now had complicated feelings within her. The argument that Miyuki had with her made her realise that she was not the only girl around Tatsuya. Though on the one hand she thought that Issei was cool but she knew that Issei still thought that Irina was a boy on the other hand she knew that Tatsuya had always helped her and treat her just like a girl she is.
She wanted to realise her feelings by being around Tatsuya but Miyki would always come in her way and would prevent her from doing so.
Seeing her like that her parents were a bit concerned for her but could not do anything as she was the one who distance herself from him and would have to solve it on her own.
Just like all this one year passed away. Now Tatsuya and Irina were both 6 years old and Miyuki was 5 years old. Tatsuya had decided to take Miyuki with her in the astral plane as there are many weak monsters on which Miyuki can practice fighting and get experience. Tatsuya also started to spend some more time with the Shidous as he knew that the next year they would be going back to England.
Tatsuya had also told Miyuki about him being an immortal and a high Human and had promised her that he would make her a high Human as well when she would reach high class level.
Thinking about the reward that would make her live with Tatsuya for a very long time the fire inside her rekindled and her enthusiasm grew even further.
He had also given her a ring that would hide her presence and would also tell her position to him. She could also use the ring to send a SOS in case of emergencies. The ring also had a huge storage inside it which worked just like his own storage just that her's was limited.
Right now he was out on buying some groceries and some things that Miyuki had asked for. When he was returning home he came in front of a park. He saw that Irina was there and thought of calling out to her but stopped when he noticed that she was with Issei. He sighed and left them there. He had warned her many times but she didn't care about his warnings.
Right now it was raining heavily and the Shiba siblings were having dinner peacefully. Miyuki would often find chances to feed her onii-sama and Tatsuya would wholeheartedly recieve her affection and would even return it by doing the same. Their blissful moment was broken when Tatsuya recieved a call on his phone.
Miyuki was very annoyed and Tatsuya patted her head to comfort her. Tatsuya sighed and looked at his phone but he got confused as he received the call from Touji and picked up the call.
"Hello" said Tatsuya. On hearing Tatsuya's voice Touji asked him in seriousness, "Tatsuya do you know where Irina is? She still had not came back home yet." Tatsuya found it odd that she still had not came back and said, "No I don't last time I saw her she was with Issei." On recieving the answer Touji sighed and said, "Ok if you find anything about her do tell me." Touji tried his best but Tatsuya could still feel that Touji was very panicked and worried about Irina.
Tatsuya used his magic to find Irina and found that she was still in that park. Tatsuya told Miyuki about that and immediately went towards the park. When he reached the park he found Irina still sitting on the bench. He went towards her and covered her under an umbrella.
When Irina felt that someone was in front of her she looked up and saw that it was Tatsuya. Tatsuya was about to say something but Irina immediately hugged him and started crying. Tatsuya just stood there and didn't said anything and patted her back. After she calmed down a bit Tatsuya looked at her and asked, "so wanna tell me what happened?" Irina who heard him was a bit hesitant but still told him.
Irina told Tatsuya that while they were playing in the park Issei was still spouting his harem king nonsense. Irina whose feelings were getting complicated day by day decided to ask Issei what did he felt about her.
Issei who still thought that Irina was a boy told her that she was a very good friend and all. Irina who was a little dissatisfied with his answer asked him that what would he date her if she was a 'girl' to which Issei immediately denied saying that he didn't like boys and even if she was a 'girl' she would not be to his liking.
Hearing her Tatsuya was very angry at Issei and wanted to kill him but calmed himself and consoled Irina who had again started crying.
Tatsuya who saw that Irina was not stopping removed her from her embrace and looked at her and said, "Calm down it's not like he was the only person in the world. It is his loss for losing such an awesome girl like you Irina. If he cannot accept you for who you are then he didn't deserve you anyway, don't be depressed because of him and show him that you can be happy even if you are not with him."
Irina who heard him stopped crying and nodded and looked down. Tatsuya who saw that she had calmed down carried her on his back and took her home. Touji and Grace thanked him and he went to his home.
While he was in the bath along with Miyuki he noticed that Miyuki was not talking to him like usual but shrugged it off as he was tired today and thought that he would ask her about it some other time.
Unknown to him his whole confrontation with Irina was known to Miyuki because while he was talking Kurumi had connected his telepathic link to hers. Hearing Irina's story Miyuki was very angry at the boy. She also thought that now Irina who had come to accept her feelings will come towards Tatsuya and was thinking whether to accept her or not. She was discussing with Kurumi about this matter and they both came to the decision to give her a second chance.
While both of them were discussing Tatsuya noticed that his link was connected to her's and he too heard their discussion and said, "you know I think I have to prohibit Kurumi from connecting the link as it is a matter of my privacy." When they heard it both Miyuki and Kurumi who was inside her looked dow in shame and didn't utter any words.