Issei can be seeing siting in his classroom while resting his head on table as after yesterday's event he is very tired first he stole Zeus's weapon and later he goes for soul of beast where there was many traps some were very dangerous and while he was running for his life after doing an act of idiot which makes Ddraig laugh annoying Issei in return
What happened was that there was a sign of danger with note saying "don't press it" but Issei being as curious like a child press the stone which results in throwing in dragon slayer arrows which make Issei run like he never did in his entire life but let's get back to main topic that Issei got the soul of beast but to tame him he has to make a deal with him
(FLASHBACK)
Issei can be seen in his training room and in front of him was the beast in all his glory
Beast: so you are the on who freed me -said in heavy voice seriously with full of power trying to scare Issei
Issei: that's correct I am the one who freed you because I need your help -said calmly without showing any fear since if he can fight Trihexa at full power without getting scared it is nothing
Beast: what kind of help? -asked seriously while being surprised that Issei was not sacred of him like others in past
Issei: i want want you to become the soul of my lightning eagle -said while pointing to his yellow eagle who is flying peacefully at sky
Beast: and why should I do it? -said coldly- you also don't have anything that interests me -answered
On Issei's side he just take out the blood and weapon of Zeus which is also bathed in its blood. Beast upon seeing what he had become surprised because it releases so much raw power and he also recognise it what it was but before he could say anything
Issei: it is Zeus's weapon and blood which i recently stole from him -answered normally- you can have it because I know that in past before you being sealed by Elohim, Zeus attacks you and stole half of your power and make this weapon for himself and i am returning a part of your power which rightfully belongs to you and in near future you can have your revenge against him -said while trying to make the beast see the reason which benefits both
Beast just kept quiet while thinking on what to do on one part it was still furious
that what Zeus did to him in past and before he could do anything he was sealed by Elohim who siad that in future someone with purest soul free him. Elohim also said that he can't say the reason on why he was sealing him but said that future depends upon itOn other hand Issei who is giving him the reason to be the soul of his eagle which is a machine but can say that it is extremely powerful and he will have a hard time beating him in his current condition
Beast: why are you helping me? What will you gain from it -asked curiously
Issei: it is because both human and supernatural Worlds are depend upon it -said seriously which make the best rethink
Beast: alright i will become the soul of your machine and will help but you will me in getting the revenge on that pathetic excuse of God Zeus -said seriously
Issei nodded and promised him that he will get his revenge when time comes which is not so far and he also give blood and weapon to beast who absorbed them and become very powerful
Issei: so do you have any name or something? -asked curiously