(A/N :- Hiroshi is now renamed to plain simple Hiro...)
***
Tsukiha increased her size to stop Tiamat from going into outrage mode and razing everything in sight.
"Tiamat onee-san, please calm down! We'll take you to Hiro."
Tiamat returned to her human form and looked at Tsukiha with a cold smile. "Do it. I want to see where that brat is hiding."
Tsukiha tracked Hiro's location with her connection created by the familiar contract and created a magic circle to teleport which Hiro taught her.
Both of them appeared in a large room with blue walls. Tiamat at first found this room familiar before her eyes fell on the brat peacefully sleeping on the bed.
"..."
"How did this brat bypass our defensive spells? Even that red-haired Maou won't be able to do it without brute force."
She directed the question at Tsukiha who hesitated to tell her Hiro's secrets but under the cold gaze and the fact, her onee-san will also become Hiro's familiar melted all of her reluctances.
"Hiro can manipulate his own aura to match any person. He might have used that to enter this house."
Tiamat's eyed the half-devil sleeping and assessed the true power of this ability.
'This brat can assassinate anyone with his stealth and aura changing ability, on top of that he has immense demonic power which he didn't appear to be born with. He might be a good candidate.'
"How old is he?"
"Hiro turned fourteen on the day we met."
"Still too young. I accept this loss. My arrogance clouded my judgement…" she continued with a sigh. "I promise to become his familiar."
"Yay! Tiamat onee-san! Now we can fight those bad monsters together!"
She threw another questioning look at Tsukiha. "What bad monsters? I didn't ask it before, tell me where you two went for the past twenty days?"
"Nice. Let's form the contract then."
Hiro, who was faking sleeping in fear of her wrath, spoke up as he stood from the bed. Otherwise, he wouldn't be able to keep his aura hidden.
"You were awake the whole time!?"
"Hiro!"
He wanted to dodge but he let Tsuki rub her cheeks on his body. He shot an inquisitive gaze at Tiamat, conveying about the contract.
Tiamat let out a sigh before nodding her head. "I'm ready to form a contract. I have conditions. First of all, I'll have full freedom to decline any order I don't want. I'll help you train in exchange you'll help me reach the Super Devil Class. I want to know all about this process and the monsters Tsukiha-chan fought and most important of all, you'll address me Tiamat onee-san."
Hiro nodded his head, her conditions were fair. He never expected Tiamat to become completely subservient just because he formed a pact with her. Her most important condition was the easiest in his eyes.
It's just a form of addressing, nothing major, he shrugged at the thought.
Enduring the fluffy feeling on his cheeks, he began explaining the things about Records, Chaos creatures and a general idea about Ortus.
The astonishment on Tiamat's face grew as the words said by Hiro brought a sense of excitement to her. She couldn't wait to meet the creatures herself and devour some origin candies.
"Hmm… Now what are your plans? When will you enter that location!?"
Hiro shot a blank stare at her, the Chaos Karma Dragon was looking at him with shining eyes, creeping him out in a way.
"I'll go to Sitri mansion first. Then the plan is to find something in Svartalfheim, the city of Dark Elves and Dwarfs. So it'll take at least two months before we enter the second Record."
Tiamat let out a heavy sigh. "That's not much... considering we waited for tens of thousands of years… How will you enter Asgard? Devils are not really welcomed there."
Hiro smiled faintly as he replied, "Don't worry, I have my own way to enter that city."
"Wait! Why are you saying that? Are we not coming to Svartahim!?" Tsuki released him and grabbed his shoulders with her wings.
"...No. Taking you means inviting all the troubles to me."
"That's not fair! We wanted to visit that Svartahim place."
"Tsukiha-chan! I'll make sure he takes you with him so don't trouble him for now."
Tsukiha calmed down from Tiamat's words and glared at Hiroshi with an indignant look.
Hiro shrugged his shoulders. He was thinking for her best. Taking her will mean another butt load of origin energy to camouflage her and who knows if Odin met them by chance. He wasn't confident enough to hide her in Old Man Odin's single eye.
He created the magic circle for the familiar contract. Unlike the naive Tsukiha, Tiamat checked over the magic circle, only then did she create her own blue magic circle to finish the contract.
"Now take back that barrier. I need to sneak inside Sitri mansion. I'm also curious how you'll make sure I take Tsuki with me."
"What's your relationship with that Clan?"
Tsukiha's ears also perked up at the question, she also wanted to know about his past.
Hiro let out a sigh. "I used to be a servant of that house."
Tiamat frowned. "How come I never heard of someone talented like you? Though I heard about a trash half-devil leeching off their Heir," she stopped and looked at the blank stare on his face. "Don't tell me you are that trash."
"Sorry for being trash."
"Ahahaha, I wonder how their faces will be if they knew the trash half-devil was saving everyone's lives in the background."
"Hiro is not trash! Stop calling him trash!"
He smiled bitterly. You too should stop.
Shaking his head sideways, he created a magic circle and vanished, leaving behind Tiamat and Tsukiha.
Tiamat turned to Tsukiha with a mischievous smile. "You sneaky little girl. You marked him as your mate without informing him. Have you ever thought what if he rejected you? You'll always stay single for eternity."
Tsukiha's glowing eyes opened wide before tears began forming at the corners. "Doesn't choosing mate means we can always stay with him as his partner? H-Hiro won't reject us, right?"
"That's up to him to decide. I can't force him for this."
She said and massaged her forehead, thinking how to explain this naive girl about mating. She decided to push back this topic to a later date.
"I'll teach you the skill to transform into humanoid form. You already have «Transform» so it'll be easy."
"Yay!"