Tell me why A (hunterxhunter)

chapter three:old memories

y/n pov
I was in the universe were my old freinds lived undertale (it's a version of undertale were monsters looked like humans) I saw the place where It all begun MOUNT EBOT
(flash back)
I have already killed the gods of the dungeon I was bored and I chossed to go to a universe to have fun and the name was undertale when I touched it I know everything about this world and I got teleported to this universe I was going to mount ebot the place of all monsters when I falled I saw a seventen year old girl (y/n was six at this time) she looked at me
frisk:what are you doing here child
y/n:oh me I have fallen in this thing
frisk:ok child I am frisk and you
y/n:y/n
frisk:ok y/n let's find a way to get out of here
so we continued until a talking flower came and he said his name is flowey and he continued talking about love and shit like these he said that he will share some love I know he was lying so I used gaster blaster on flowey and it destroyed all of flowey
frisk:what the heck y/n he was just helping
y/n:frisk these are mana bullets
and i taked her and regenerated flowey and he ran away and we walked untill we met a woman who had white hair red eyes and horns
toriel:oh hi you two I am toriel the keeper of the ruins
She said  and she showed us a few puzzles and the ruins and how to spare and frisk soul was determination and me it was blood (blood is the strongest soul and someone who can perfectly challenge y/n but too bad he is his soul)
toriel:oh my god child your soul is so special but that will make monsters want your sou- more
I said ok I didn't care at all because the monsters who wants my soul will be dead like the gods and angles that wanted my soul so we continued and it happend the same because frisk didn't let y/n kill them and when they fighted toriel she didn't have a chance because y/n had her in ghost rider chains
y/n:don't worry toriel we will be okay
toriel:ok and I am sorry my child's but promise me this stay alive
we said ok and we go to Snowdin and met sans and papyrus and sans kept an eye on me because I had 100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 lv I had breaked the record by a shit ton so I can't blame him especially after what he saw the humans does but Dah I am not a human so we continued the same thing happend In undertale but when we got to undyne I didn't kill her but kicked the shit out of her but didn't kill her so i leaved and got to frisk and saw metaton flirting with frisk so i ripped his heart off frisk was about to scold me but alphys said that she can rebuild so frisk didn't scold me and everything went normal to king asgore
asgore:oh it's you two but you have been knocking out most of my soldiers and guards and royal guards
so we followed him and the fight begin I didn't even use weapons I used an amatrasue and asgore had one hp left and I was gonna kill him but frisk said
frisk:no y/n it's spare and be spared
y/n:no frisk in all the world's universe's omniverses the keyverse itself it's Kill or be Killed
and then flowey showed up killed asgore and taked the souls and transformed into omega flowey
omega flowey:hahahahahahahahahahahahahahaha that's what I like about you y/n you are like me kill to get what you want but too bad I need your soul
I kicked the absolute shit out of flowey and before he can save and i taked all the soul's out of him and he became a defeated weak injured flowey
y/n:get ready to be demolished
frisk:no y/n spare him spare him
so I hardly spared flowey and he run away and frisk did everything she did in pacifist and Asriel came out
asriel:hello chara and weakling it's me Asriel dremaur
y/n:weakling you are so dead asriel dremaur
asriel:like you can now you can kill someone who have six soul's not seven
and I have kicked the absolute shit out of him and I was about to kill him and I ignored frisk and her shouting
y/n:say your last word before I kill you
asriel:hahahahha just how strong are you you are able to kill me even with seven soul's but killing me would make you just like me a murder who doesn't care about anyone he kills he only wants to live and kill more
y/n:that's what the other gods said before I killed them to oblivion and also I am already a murderer
before I kill him I remembered everything I did I saved all the universes but how did I save them I saved them with violence killing I killed a lot some could say that I killed an omniverse but what did I get nothing nothing at all all the killing suffering is for nothing so I didn't kill asriel but I taked the soul's out of him
y/n:listen take this I said
I created a monster soul and he returned to asriel and he went to his parents and hugged them a lot so the pacifist ending continued normal
y/n:hey toriel do you have someone you want back
toriel:well I have a friend named chara
I snapped my fingers and chara returned back to life
sans:huh you are not bad but your lv breaked the record
y/n:I have killed a lot of gods and angles some can say I killed an omniverse
sans stood there shocked and confused and a little bit angry I can't blame him gaster have done genocides throughout timelines but I am worser  than him I have done killing without a reason gaster did it for the sake of science and also I killed infinites above infinites of timelines
sans:so you killed this many he said in between confusion and anger
y/n:don't worry they were evil that they killed a lot of races in their universes
sans looked more relieved but still a little angry
y/n:welp my time here is done see ya guys I will come someday
sans:hey kid take this it will tell me if you are killing good people
so I taked his jacket and that's how I got the jacket of sans and I smiled and said goodbye while watching sans gives frisk a marriage ring I wished that I was able to watch the wedding but I can't
and I snapped and gaster appeared and he hugged his two son's
(flash back end)
y/n:ah long time no see sans I said to the one behind me and he was happy and crying tears of joy because I did what he Said I didn't kill good people and he hugged me and said welcome back pal you have grown