long ago before the hero association was created a person was protecting the whole world from the monster he is the mentor of the 1# hero blast and the master of bang his name was....
Y/n amamiya
It was now the next day and today as Saitama and y/n are peacefully oversleeping as all of a sudden a hand smashed through their floor and grabbed them by the head as Saitama punched the hand but it punched him sending him outside as y/n crushed it with ease
As Saitama stares in total shock and disbelief that someone destroyed his and dad's apartment
Saitama: th-the apartment
He said as y/n land next to him as he had a stoic face which is really rare to see since he changes over the last 100+ years
As two monsters came up from the ground and punched them both which they both blocked it with y/n only using his index finger to block
As it send them skidding to the side as Saitama ask
Saitama: what are you....
He said and also thought
Saitama: they're strong... Maybe they could give me a challenge
He thought as two monsters appear besides him as he look at his father and said
Saitama: dad let me handle this if it goes out of hand interfere
He said as his dad nods and levitated away
This fight but add y/n in it
As an alarm went off and Saitama ounch the alarm (F for the alarm I know some of you hate alarm since it have you school flashbacks) as he stares at the ceiling
Saitama: ................
As he heard the head the underground people below him as he got dressed in his hero costume and jump out and landed in one of the underground people's head crushing
Saitama: I WILL PROTECT THE SURFACE NOW LET'S DO IT!- huh?
He looked to see the underground people fled into the underground as a little flag that says we're sorry as once again he was disappointed
As we see Saitama with his hero costume riding something as a dude said
Dude: dude, just walk it's probably the same
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