I promised... only you

An event

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......
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*a crushing voice is coming from the outside*
Cross and Xchara : What the heck was that ?!
Nightmare: ......
..... oh no , not again !
Cross : what's happening?!
Nightmare: you two better stay here.... everything will be fine ... I hope .
Xchara: wait what ?! What about Xfrisk ?
Nightmare:I'll bring him with me just shut up .
Xchara :... I'm not weak you know ,you really have no idea-
Cross : Xchara it's ok ,he knows this place better after all ,let us just wait ....and think why the heck he get out from the first place.
Xchara: borrrring as always Cross .
Cross : fine what about we watch what's happening,there is a window over there .
Xchara: omg yes !!!
*they're watching what'a happening,nightmare is already in there*
Nightmare: YOU again , don't you get it , you're not getting what you want .
?????????: you think so ,hehehe~
Nightmare:I knew so ....
*it didn't take a long time before the team arrived*
Diann : Omg ,why can't he just die ?!Quetzalcoatl : how even more stupid you can be , I told you he CANNOT die .
Diann :how do you know ,caveman?
Quetzalcoatl :I'm the literal guardian of the tree of life and death , how do I not know ,and YOU TAKE THAT BACK !
Diann : NEVER !
Moon :... omg guys he literally beat us up and run away .... I can't believe your level is higher than mine .
Nightmare: don't say that , I'm sure you'll graduate from a knight to a guardian one day.
Moon : Shut up nightmare, you know I can be a guardian if only the real one is dead and there's no relatives alive left .
Nightmare:......
Diann : anyway where's Star ?!(DreamTale!Frisk)
Moon : she's hanging out with Xfrisk as usual.
Diann: she's so useless.
Quetzalcoatl : not useless as you lol .
Diann : OMG YOU'RE LUCKY ENOUGH,NIM FORBID FROM KILLING YOU .
Quetzalcoatl : are you sure it's not because we can't die ?
Diann: ...... I just want to kil-
Nightmare: Yeah let's stop , it's true he run away but look at the bright side , he didn't get what he wanted.....