Hayate Ayasaki is an ordinary student of Kouh Academy. He sometimes help his best friend name Kiba Yuuto for his training. He always helped the Student Council name Sona and Tsubaki for their help, Hayate wants to become a butler when he grow-up but...
It's been over 2 years since Hayate's 'Death,' Rias tries to talk to Sona for how sorry she is and to make it up for her but Sona ignoring her and never talk. But the only personal who she ever talk to is Kiba and Koneko for the school activity, these two know Hayate ever since he's the first one who transfer this academy before Koneko. Sona ask them how they met him, Kiba told her that he's been taught with Hayate lesson sword skills and he knows how to use it. Then Koneko told her she sees him at the gym doing his combat fists and combat kicks all by himself, she ask him to have a spar fight like normal people and he had won the fight, Hayate gave her some of the sweets and calling him Senpai.
Timeskip
Hayate is now on UAC facility business of the most powerful company of the entire world known as The Head of the UAC 'International SwitchBlade' and he's now the Co-Leader of the Survey of the Intelligence Creation. He's now in the big mansion in the training room to train with the Dimensional Sword and the Time-Cube to master the ability, when he hear the door open, a woman with both purple eyes and her hair who is the intelligence genius, and a teenage girl with pigtail pink-hair and orange eyes who is a major contribution on any teammates of SwitchBlade. And both of their names, is Yuriko Takagi and Saya Takagi.
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(Author: I'm putting them as they didn't met Komuro Takayashi and his friends.)
They are from another universe where there's the destruction of the apocalypse by the living dead zombies, when they were trap in the middle of the road bridge, they're fighting together until they survive but they didn't save his father name Sōichirō Takagi because he was bitten by the neighbor's house. They unfortunately ran out their bullets and ready to accept their fate but they see an X mark from the sky and saw a person who fell and kill all the zombies all around the bridge, they saw Hayate lending their help getting up. Once he leaves, Saya and Yuriko wants to come along with him but Hayate told them he's not from this universe but they still want to go and fight alongside him for their future so he accept it and take them to their new home on his universe.
Yuriko: Honey, The Mayor would like to speak with you.
Hayate: What is that he wants to speak?
Saya: He said they'll have a meeting at 4:00 afternoon on next week and he wants you to come there.
Hayate: Hmm, very well, tell him I'll be there for a next week meeting.
Saya: Alrighty then.
Saya walk back and make a call the mayor while Yuriko watch Hayate continues his training until Daiya and Hit appear besides her.
Yuriko: I just can't believe that child is the only one family he has left but his brother didn't come to visit him.
Daiya: Yeah well he's getting use to his emotion, and it looks like he's getting use to it, the kid's equipments and his ability for 2 years.
