As Frank Castle is in a Tight situation with four teenage girls while both sides are armed & trying not to any move at all, since Frank Castle doesn't know much about ' Renment', he may try to reason with them without hurting anyone, if it doesn't work out, then, it's never ever going to end well.

Frank Castle: [ still aiming my Shotgun at the Blonde girl while remaining claim] ' don't try anything that's going to get us far more worser than ever & I want answers.'

Yang: ' hey, I was going to ask you that as well, man & second: who are you? ' [ trying not to make any kind of move in him while under pressure]

Weiss: [ pointing my Myrtenaster at the man with the Skull vest & felt kinda of worried about the situation] ' Yang, I don't think that's a good idea to ask him. Plus, he might not negotiate with us. '

Frank Castle: ' one: ' where am I & second: what where those creatures?, Miss...umm ' [ looking at the young black dress teen with the red cape]

Ruby: ' I'm Ruby Rose, team leader of team RWBY & your in Renment & those creatures you took down are Grim, Mr...'

Frank Castle: ' it's Castle, Frank Castle. ' [ Putting my weapon away slowly ]

Team RWBY: [ putting our weapons away slowly & carefully ] Ruby: ' So, Frank...? Where are you from actually? '

Frank Castle: ' I'm from...New York, United States of America & I'm not from this world... I'm from a different Earth. '

Ruby: ' hmm, that's amazing, Frank. '

Weiss Schnee: ' I'm Weiss Schnee, the heiress of Schnee dust company. '

Frank Castle: ' Dust? I've never ever had heard of that before. ' [ a little confused]

Blake: I'm Blake Belladonna, I'm one of the team members of RWBY.

Frank Castle: ' great to meet you, Blake. '

Yang: ' I'm Yang Xiao Long, Ruby's older sister. ' [ wink at Frank ]

Frank Castle: ' umm, your both kinda.. different? '

Yang: ' we get that a lot, Frank. By the way: how did you manage to kill all of those Grimm? '

Frank Castle: ' it's best not to know, Yang. What you & your team are here for...? '

As Frank Castle was about to say something, a Man with a Green uniform, White hair, a set of black spectacles came inside the room where Frank Castle & Team RWBY is at & said: ' to help you & to make an offer for you, Mr. Castle. Since you're not just from another world, your skills & techniques have greatest experience & endurance within combat & survival.'

Frank Castle: [ look at the man with the Cane & remain claim] ' hmm, who exactly are you & what kind of offer are suggesting?'

Professor Ozpin: ' I'm professor Ozpin, the head of Beacon Academy & my offer is for you to enroll in Beacon Academy as a student, we might be able to help you to get you back to your world, Mr. Castle.

Ruby Rose: ' it'll be a great idea, Frank. Please join Beacon Academy, you can able to learn about our world as well.'

Frank castle: [ looking at Team RWBY for a minute & looking at Ozpin] ' alright, I'll join Beacon Academy. But, on some conditions: 1. I would like to keep my clothes instead of using the Beacon Academy uniform, 2. No team allowed until I'm done with the academy tests, & 3. To use this house as my own base whenever I needed to do my weapons engineering, Sir.'

Professor Ozpin: ' very well then, Mr. Castle. Now, let us..oh, I've almost forget. [ Give Frank Castle a small device to his hand softly] here, you absolutely might need this for communication and any sort of business.'

Frank castle: [ examining the device & open it] ' thanks, Opzin. This may come in handy.'

" After Frank Castle made a decision to go with Team RWBY & Opzin at beacon Academy, they're inside a large aircraft & while everyone is inside the airship, One of the Team members of RWBY is absolutely curious about Frank Castle & what's his story, but it's best to carefully of what they say to him."

Frank castle: [ staying slient & pulled out a photo of my wife & kids & looking at it] ( in my thoughts) ' Maria..'

Ruby: [ seeing Frank looking at something on his hand] ' is everything okay, Frank?'

Frank castle: [ stopped looking at the photo & putting it away casually & looking at Ruby] ' umm..yes, I'm alright. Thanks for asking.'

( 30 minutes later, at Beacon Academy)

' once the air ship has landed on the ground, Professor Ozpin, Team RWBY walked out of the airship, waiting for their newest member for beacon academy.'

Frank castle: [ walking out of the aircraft & see a giant Castle that's like straight out of a fantasy book] ' what the....?'

Professor Ozpin: ' welcome to beacon academy, Mr. Castle.'

End of Chapter 4