Issei was surprised to see a strange crown and on his shoulder but to his surprise it wasn't an ordinary crow. He knew well what kind of creature that emits such pure dense of miasmic energy. It was a demon from sealed world far from draconic deus (Issei world).
He remained calmed not sensing the slightest of killing intent which was appreciated by the crow. Everyone was curious at the appearance of the crow.
"Sir Zatouji do you what kind of familiar this is."
"No this thing seem a mystery to me. It's my first time seeing something like this."
"Ara~ it appear ise-kun manage to gain a familiar. Great job ise-kun."
Only silent came to pass that made everyone feel tense from the eerie atmosphere. Issei was to fixated from what he should do if he'd make this creature his familiar or not.
Demon from the sealed world are only able to escape the realm was to send a weaker body with only pure energy or have someone summon them with blood sacrifice. They can be turn into servants if given a name and by doing so the master will be able to bestow a new body to the demon.
'I've read a book about you and I know you are one of the primordial colors.'
'Oh, the joy of those words brings shivers to my body. Please grant this servant a chance to show my worth I swear in my life.'
'Tell me are you the one that been spying on me?'
'That I won't deny my lord but I only wish to see your magnificent work before I can have the opportunity to show myself.'
'Hmm alright, I shall take you as my servant.'
'Wonderful my lord. This lowly one shall serve you for all eternity. Those that defy my lord shall die by my hands.'
"Issei are you alright? You seem space out after that familiar landed?"
Rias was concern seeing Issei stopped responding. She was mad at him for the display he did with Sona but couldn't stay angry and felt scared at his action.
"Ah sorry Buchou. It seem this familiar wanted to serve me."
"Oh that's great to hear."
Both Issei and Asia prepared to form a pact with their familiar. After Asia finish her incantation then Rassei flew towards her cuddle on her breast making Issei infuriated. Even thought his not pervert he still doesn't like other people touching his lovers breast even if it's not human.
"Ise-kun it's your turn."
Issei nodded while the crow happily descended on the ground. It was bowing down and spreading it's wings with utmost respect making the other ORC shocked.
"I, Issei Hyoudou, The red Dragon emperor of Domination and the crimson sat-*Cough* I command you to serve me for all eternity and bestow you the name 'Diablo'."
Issei remember a popular game he used to play on his free time when his not playing erotic games. It was fun hobby he remember.
A black mist emerges from the ground embracing the black crow that shook everyone feeling the tense energy being created from the pact. They never seen something this spectacular.
"What's going on!? Did something wrong happened?"
"I'm not sure I have not seen this before in my life. All of you stay back."
"Issei are you alright!? Say something!"
Issei stood still feeling his energy was absorb by his action. He knew this would happened when reading the text about demons from the sealed world.
"Hahaha it's been far too long since I have been given a body. How nostalgic having to serve Demon lord once more. The joy finally escaping that accursed world. Let me thank you my lord by killing all your enemy."
The most vanish where the crow once been stood a handsome man wearing butler tailcoat. A Black hair with streaks of red and gold, as well as golden eyes. It was smiling calmly but their no mistake certain death would be the result if they fought it.
'Enough I know you are in a state of bliss but bare in mind my friends are far too weak to withstand your aura.'
Issei coldly said in telepathy much to his servants guilt who quickly dispersed his energy and kneel on the ground. He was currently a A-ranked ultimate class which is why Rias and the rest feel pressure.
"Forgive me, my lord for my action it seem I was far too exhilarated."
Issei nodded while he turn around to see his friend prepared to attack any minute. None of them notice diablo about word Demon lord as heh were fixated at what they witness.
"Wait wait why are you guys so tense!?"
"How can you remain calm after what happened!?"
"I thought it was normal though?"
Everyone face palm realizing that Issei was ignorant that it wasn't supposed to happened. They stared at the kneeling butler not moving one bit.
"Tell me who or what are you?"
"I'm a mere creature who wish to serve my new lord. Please forgive my imprudent forgetting."
"That doesn't answer my question!"
"like I have said I am a mere servant wish to be of used to my master nothing more, nothing less."
Diablo wasn't lying as for him it was the truth. He doesn't hold much ride in his status but rather his servitude to Issei.
Rias wanted to asked more concern if he was threat to Issei but calmed down knowing the familiar pact forbade them from attack their master.
"What's going on here?"
Before long beautiful woman came out of the forest that had pale blue hair and dark blue eyes with cold radiate from her beauty. She was emitting a large amount of power staring at the Diablo.
"Tiamat-sama you sense it huh?"
"Yes I didn't expect for new devil to attract something interesting. Wait…I smell a bitch."
Tiamat looked at Issei then coldly stared at him. She quickly noticed what it was that made her infuriated.
"So this the bitch current host huh?"
[it's always a displeasure see you again Tiamat.]
Issei sweat being in the middle of two woman's quarrel. He stupidly forgot that Tiamat hated Irene in the past quarrel. Diablo who doesn't like his master being belittle stood up.
"Master Issei let me handle her for you if you will?"
"No don't it would make things worse!"
"Hmm Heiress of the Gremory household. How is your brother doing? Has he fulfilled his promised?"
"Lady tiamat my brother is doing well. As for the promised he made I do not know."
"Hmm I'll talk to him later about it. Anyway what are you creature? I sense a dense darkness within you?"
"Greetings my name is Diablo bestowed by my lord. It is pleasure to make you acquaintance and I do not wish any harm from earlier. I wish to all for your forgiveness."
"Hmm I sense no ill intent. Who is your master?"
"T-That would be me?"
"I see very well I'll let it passed since I hate being close with this bitch."
[Damn go far as possible!!]
"though I'm curious about your new host to be able to have special creature wish to serve him."
[Don't get any ideas his my mate!]
Everyone was surprised from her exclaimed while Rias felt needle pierce her heart hearing Irene's words. She click her touch which was heard by Akeno who remain quiet. Meanwhile Diablo was making mental note which woman that has an affection to his new lord.
"A mate huh? I wonder if I should steal him from you?"
[You can try but I'll make you sure to be only one satisfying him.]
"Hahahaha I hadn't seen you into a man which makes more interested but I'm quiet busy therefore I'll take my leave."
Tiamat glances at the sprite dragon nodding then return back to her home, making everyone breathe easy. Few minutes had past calming everyone down.
"Now that you two gain familiar even though issei is peculiar."
"Don't mind me, my lady. I shall remain hidden to answer my master every call."
Diablo bowed then hid within his shadow. Rias was still shocked that his pawn gain a powerful familiar but it did gave her joy for an unknown reason. They finish their business in the familiar forest and return home.
'I have my first task for you, Diablo."
Issei was in his room summoned Diablo from his shadow who respectfully bowed his head. He was excited to have his first task to do.
"What is it my lord?"
"Go investigate this place and try to save this person. If you found nothing or too dangerous, return immediately."
"Oh I shall not fail my lord. I'll surely return with result."
"Go now but make sure to return and avoid causing trouble."
Diablo smiled then disappeared to do his task while Issei rest his eyes as tomorrow was his date with murayama.