Disclaimer: I don't own the Inuyasha characters. I do however own the plot and other characters unless stated otherwise.
Twins are two offspring produced by the same pregnancy. Twins can either be monozygotic("identical"), meaning that they develop from one zygote that splits and forms two embryos, or dizygotic("fraternal"), meaning that they develop from two eggs, each fertilized by separate sperm cells.
Half-identical or semi-identical twins (also referred to as "half twins") are the result of a very rare form of twinning in which the twins inherit exactly the same genes from their mother but different genes from their father. Although examples of half-identical twins have been found, the exact mechanism of their conception is not well-understood, but could theoretically occur in polar body twinning where sperm cells fertilize both the ovum and the second polar body.
This situation is not the same as the common form of fraternal twinning, in which two genetically different ova are fertilized by two genetically different sperm. In this case, the ova are genetically identical.
The InuTenchi and Kouga were discussing rumors in regards to Naraku. Meanwhile Hakkaku and Ginta were still catching up to Kouga who had run ahead of them. The group and the wolf leader all heard the blood curdling scream. And everyone ran to find the ones who screamed.
When they finally got to where the other two wolves were no one was there except Ginta and Hakkaku. Both wolves were lying on the ground and neither was moving. They were just completely shocked. There was blood on the ground and it looked like there had been some sort of fight. Everyone wondered who would do this to their friends.
Kouga despite his distress and anger went over to his friends and Inuyasha surprised them by going with him and Kouga managed to help Hakkaku sit up and he said, "What happened?"
Hakkaku despite being in pain said, "We got ambushed. We didn't even sense them coming."
Kouga looked at Inuyasha and he merely looked at Kouga with a sad look that the humans missed and Hakkaku turned upon seeing Kouga's look and looked toward Inuyasha and Ginta. He didn't even care he was hurt. He went toward them and the humans didn't understand at all. They did though when Hakkaku started crying on Ginta's chest. Kouga was upset too but kept it together for his friend. He merely rubbed Hakkaku's back as he cried.
Inuyasha took in the scents around them and growled and Kouga looked at him and said, "What's wrong Inuyasha?"
He stood up and said, "You all stay here."
Kouga went after him and grabbed his arm and said, "What's going on?"
Inuyasha merely quietly said, "I know who did this."
"Then I'm coming with you." Said Kouga angry
Inuyasha merely put his hands on his shoulders and said, "No you're going to stay here." Before he could protest Inuyasha covered his mouth with his hand, "Stay here with Hakkaku. I will go talk to their Lord and figure out why they attacked them. Maybe there is a valid reason and it was a miss understanding on the Lord's part."
"That won't change the fact they killed my cousin Inuyasha." Said Kouga angrily
"I know that. But I can fix that too. Tenseiga can bring the dead back to life. All I gotta do is ask Lord Sesshoumaru." Said Inuyasha
(A/N: In my story the wolves don't know Inuyasha and Sesshoumaru are related. And in my story Inuyasha and the wolves are old friends. Will explain later in the story.)
"What makes you think he'll listen to you? He doesn't even care what his Minor Lords do within his own territory." Said Kouga exasperated
"Because he will. Just stay here and keep an eye on everyone. If anyone comes that is wearing a uniform tell them who you are." Said Inuyasha who merely moved away, "And then send a signal up for me to see and I'll come deal with them."
So Inuyasha left them and went in search of the Lord responsible for his friend's death. He found him not long after he left and the Lord said, "What do you want half breed?"
Inuyasha knew this wasn't going to be easy so he decided to do something he never did which was to show this man respect and hope it was enough to get what he wanted. So he bowed and said, "I'm sorry for disturbing you Nii-sama but I wanted to inform you that Lord Ryota is trying to start a war with the Ookami no Taisho."
The man turned and looked at Inuyasha and was shocked that he was actually bowing to him and being respectful and said, "What makes you think that exactly little brother?"
"Because he ordered his men to attack Lord Taiki's nephews. The youngest Prince Ginta was killed while his littermate Prince Hakkaku was injured." Said Inuyasha still bowed
"Insolent fool. Very well I will deal with him then. I am not going to war over a worthless human's mistake." Said the lord but before he could leave Inuyasha stopped him, "Now what Hanyou?"
Inuyasha hated that name but kept it to himself and swallowed his pride and while remaining bowed he said, "If I may Nii-sama I'd like to ask a favor of you. Could you use Father's fang and correct Lord Ryota's mistake?" Before he could say anything Inuyasha added, "I'll pay you back however you want My Lord."
To say that the man, we know is Sesshoumaru, was shocked was understated and he smirked and said, "If I were to ask for Tetsusaiga as payment?"
"Then you may have it." Said Inuyasha calmly not betraying his own feelings
Sesshoumaru was beyond shocked at that but said, "Would you still say that if I were to ask for the same payment?"
Inuyasha understood what he meant and said, "Yes My Lord."
Sesshoumaru stared wide-eyed at that and said, "May I ask why you are so willing to give up so much for someone you are not friends with little brother?"
Inuyasha smiled to himself as he said, "I am friends with them Nii-sama. I've been friends with them far longer than the humans in fact. I met the wolf cubs three years after I did you."
That surprised Sesshoumaru but he said, "Very well let's go see your friends. We will see if I can return the Wolf Prince's life. I cannot guarantee it will work though."
"I understand Nii-sama." Said Inuyasha standing straight finally
When they left the clearing and returned to where everyone was waiting the humans were shocked and tightened their grip on their weapons and when they came over Sesshoumaru pulled Tenseiga and said, "Move wolves."
Both the wolves moved and Sesshoumaru used the sword on Ginta and when he sat up fine Hakkaku hugged him and Sesshoumaru sheathed the sword and said, "Inform your father Prince Kouga I will deal with Lord Ryota myself. There is no need for him to come after him for this."
Kouga bowed and said, "Yes Lord Sesshoumaru. Thank you for your help."
Sesshoumaru didn't acknowledge it and he merely looked at Inuyasha and said, "I will not be collecting on your debt at this moment. I will let you know when and what I am requesting later."
They wondered who he was talking to when Inuyasha completely floored his friends and the wolves when he bowed and said, "As you wish my Lord. And thank you Nii-sama for your help."
Sesshoumaru merely left them and Kouga said, "Your elder brother is Lord Sesshoumaru."
"Yeah he is." Said Inuyasha quietly to them, "But don't get any ideas. I don't have the same privileges you three do. I am only a Prince in blood only. As far as my Nissan is concerned I am nothing but a mistake our father never got the chance to correct."
They felt bad for him and Ginta said, "What did you trade him exactly for his help?"
They all wondered that and Inuyasha said, "Whatever he wanted."
The wolves looked at him like he was insane and Kouga said, "Please tell me you weren't that stupid."
Inuyasha didn't say anything and Ginta said, "Why in the nine hells did you give him an open debt Inuyasha? I get we're friends and have been since we all were pups but that don't mean you should do that."
That shocked the humans and Miroku said, "If I may what is wrong with what Inuyasha did exactly?"
Hakkaku said, "Everything. He gave Lord Sesshoumaru an open debt. That means that the Lord can ask for anything. He can require Inuyasha to marry whoever Sesshoumaru wants to get what he wants. He can require Inuyasha to give him one of his pups when he has them. He can even require Inuyasha to give Sesshoumaru his life. If Lord Sesshoumaru asks for Inuyasha's life he won't be able to fight him and will just have to let the Lord kill him."
They were shocked and Kagome said, "He'll probably ask for Tetsusaiga though."
"Yeah that is probably a very big possibility. But I doubt Inuyasha would give that up." Said Shippou
"He asked me what I'd do if he asked for Tetsusaiga or my life." Said Inuyasha who calmly added, "I already told him he could have both if he wanted them."
They were shocked and Ginta said, "Why would you give him that Inuyasha? Seriously my life isn't worth yours."
Inuyasha shocked them by smiling and said, "To you it isn't. But ask Hakkaku that one. He'll tell you that your life is worth way more than someone else's." They were shocked and he said, "I did it Ginta because of Hakkaku. He's your littermate remember without you around he's alone. And I didn't want him to end up like me."
The Humans didn't understand what he meant and Kouga said, "We've known you for years Inuyasha. We've never seen you with anyone before."
Kagome said, "Ok I'm confused."
Inuyasha said, "Ginta and Hakkaku are what you humans call Twins." And he looked back to Kouga and said, "And you have seen them Kouga. Once actually."
"When?" Kouga said confused
"Do you remember the Ice Princess?" said Inuyasha
"Hell yes. That's when we met you. If it weren't for you then we three would be dead. Cause she'd of killed us." Said Kouga shocking the others.
"Still can't believe you got hit by that Bitch's Ice attack and your still here though." Said Ginta getting Hakkaku's agreement.
Inuyasha smiled and said, "Wasn't me. I saved you three and killed the Ice Princess yeah. But I wasn't the one who got hit. Yuusha was the one who found you three first and the one who got hit by that attack."
The others were shocked and Hakkaku in a quiet tone said, "He died protecting us didn't he Inuyasha."
The others could hear them too and Inuyasha said, "Sort of. I'm alone but not completely."
They understood what he meant even if the others didn't and Kouga said, "But that's reversible Inuyasha. A frozen heart can be reversed and stopped by an act of love."
"Yes but one problem. That only works when it is frozen on accident. If it's done as an actually attack meant to harm you then the only one who can save you is someone whose heart is just as frozen but not by ice." Said Inuyasha who added sadly, "And they won't help us."
Kagome understood who he meant and said, "You mean Sesshoumaru."
"Yeah and like I said he won't help. He hates us too much to do anything for us." Said Inuyasha
The wolves felt bad for him and Hakkaku to him alone said, "We're sorry Inuyasha. If we had been careful that day then he'd be here with you."
Inuyasha merely smiled and to them alone said, "No worries guys I don't blame you three for anything. Sesshoumaru on the other hand I do. If he'd help then Yuusha would be with me. Instead of in the magnolia grove."