issei: how dare you!! hurt my son!
issei's ragefully arura fills the air all his anger focused on y/n in his prime sentinel slowly walking up to y/n coming face to face
Prime Sentinel: ( scared voice) Y-y-you! are a monster!
Issei: (Smirking) Neutralize, huh? good~
[issei charges at y/n knocking him through multiple cave walls bringing them back to the battle field out side)
Issei activates his Boosted and fires a powerful Dragon Shot, Prime Sentinel try's to block it with it with a shield. but the shield breaks making pieces of the prime sentinel armor
Prime Sentinel: this impossible my armor is supposed
Issei: (Determined) I don't care how advanced you are.
Issei launches a series of explosive attacks, Prime Sentinel try's to counter each move, chipping more of the armor off wearing y/n suit down
Prime Sentinel: N-N-OO I WILL NOT LOSE TO YOU!!!
Issei: (Taking a deep breath) Boost!
Issei activates more of his power, pushing his power to 15%
Issei: (Yelling) Now, let's see you keep up!
Issei moves at incredible speed, delivering a barrage of punches and kicks, but Prime Sentinel try's to adapt but its futile issei is too fast to adapt to. but Issei exploits the weak point and lands a powerful blow on Prime Sentinel, causing significant damage.
Prime Sentinel systems : Error. Unpredicted vulnerability detected.
y/n(mind): no! no! no! no!
Issei: (Pressing the advantage) I've got you now!
Issei continues to exploit the weakness, and the Prime Sentinel begins to show more visible signs of damage.
Prime Sentinel: (Struggling) N-NOO My systems... compromised.
Issei: (Confidently) You may be advanced, but you lack heart. And that's where my strength comes from!
With one final powerful attack, Issei shatters the main armor around prime sentinel now just a metal shell laying on the ground
but things were about to get worse as the pro hero's and the parents of some of the students and ban and elaine and his cousin tioreh (the daughter of kind and Diane) come to Lancelot only find his left hand destroyed
elaine and tioreh: Lancelot! who did this to you!
ex speaks up and pints to y/n in his metal shell getting back up trying to sneak away but ban flash step's right in front of y/n but no words were even said because ban was about to deliver his raith
each strike was more brutal than the last until one strike knocked y/n out of the shell of his machine
y/n went flying out of his shell skidding across the waste land scraping skin off parts of his body burning his face but his body came to a stop when his back side collided with a crook pillar shattering his spinal cord and knocking him uncurious
once he stopped skidding everyone got a good look at him everyone was shook
Lancelot: h-he's the same age as us!
issei and ban stomachs dropped relishing they were fighting a kid and had damaged his body immensely. but both of them regained themselves and issei picked up y/n's unconscious body
issei: alright everyone lets head back to the city
everyone agreed tho the did take what remained of y/n's robots and his sentinel shell and pieces that were knoked off for Iron Wood and Azazel.
NEXT DAY
LOCATION: TARTURUS
final y/n began to regain conscious
y/n: huh? were am I
y/n still dazed moves his arms but notices the most glaring problem
y/n: my legs? I CANT FEEL MY LEEGS!!!!!
END
NEXT PART DREED MAXIMUS