Birdo was handcuffed to a chair in an interrogation room as the door opens up as Peach enters and sat down opposite her.
"Hello Birdo, you're probably why they didn't send a cop to interrogate you, because i want to hear the answers myself, now i need you to be honest with me, are you the slasher" Peach said to her as Birdo let out a laugh.
"No, i'm just the decoy for him" Birdo said with a grin.
"Decoy, decoy for who?" Peach asked.
"Oh just someone who i get in close contact with him, someone you never would suspect would be the slasher" Birdo said as Peach slams her fist on the table.
"Just tell me who it is" Peach roared at her.
"But that would just ruin the surprise, me and the slasher do like to surprise people, so about the mario brothers, you should have left Bowser Jr. with them" Birdo said with a grin as Peach's eyes went wide and then ran out of the room as Birdo watches with a grin.
Mario & Luigi were seen in the living room watching TV as a knocking on the door was heard as Luigi walks up to the door and was about to open it but a knife went through the door impaling Luigi in the chest as he yelped out in pain as Mario notices.
"NO!" Mario shouted out as the knife went out of Luigi and the door as the slasher then smashes through it as Luigi fell onto the floor in pain as Mario picks up a gun and then aims at the slasher who then grabs Mario and then bashes his head against the fireplace before shoving his head into the fireplace as Mario screams out in pain as the slasher holds his head there as Mario soon dies as Luigi watches in horror while holding his bleeding chest as Bowser Jr. walked out.
"What's going on?" Bowser Jr. asked before the slasher turns and faces Bowser Jr. who then ran into the room and holds the door in fear as the slasher smashes his arm through the door and grabs Bowser Jr. and pulls him through the door and pushes him against a wall knocking him out as the slasher watches and grins.
"Why don't you show yourself you fucking coward" Luigi said to the slasher who turns and faces Luigi and slowly walks towards him and kneels down in front of them.
"I am showing myself" the slasher said before getting up and walks towards Bowser Jr. and picks him up.
"Tell the princess to come to Bowser Jr. within 24 hours, if she doesn't, i'll kill Bowser Jr." the slasher said to Luigi before walking out of the room while carrying Bowser Jr. as Luigi tries to get up but doesn't.
Peach was seen going through a warp pipe and then pops out of the warp pipe next to Mario's Pad and quickly ran into it and then notices Mario's body in the fireplace.
"NO!" Peach cried out before getting on her knees and starts to tear up before hearing someone groaning and notices Luigi trying to grab first aid in the kitchen as he stumbles and falls onto the floor while screaming in pain.
"Luigi!" Peach shouted out to him before running up to him and then checks the wound on his chest as Luigi breathes heavily.
"What happened?" Peach asked.
"The slasher, broke in, killed Mario, stabbed me in the gut" Luigi replied.
"What about Bowser Jr., did he get away?" Peach asked with concern.
"No, the slasher kidnapped you, he said you have to meet him at Bowser's Castle within 24 hours, or he will kill Bowser Jr." Luigi replied.
"Oh god why is this even happening…" Peach said to herself before putting her hands on her head.
"Peach, you're the only one who can save us now…, stop the slasher, for Mario, for the kingdom" Luigi said to her before pulling out his pistol and puts it in Peach's hand and closes it as Luigi then dies as Peach looks with concern.
"Luigi, LUIGI!" Peach said to him while shaking him as she starts to tear up before looking up with a glare on her face.
"Alright slasher, you want a war, you got one" Peach said before getting up.
Peach opened up a wardrobe to notice army clothing and boots and takes her dress and shoes off but leaves her bra and panties on and then puts the army clothing and boot on and wraps a headband around her head and pulls out a chest under Mario's bed and opens it up to reveal weapons as she notices a backpack and takes a lot of weapons and puts them in the backpack before zipping it up.
Peach was seen walking out of the house with weapons strapped to a belt as she looks around the forest.
"Nobody murders anyone in my kingdom and gets away with it" Peach said to herself before walking off towards the warp pipe and then climbs into it as she goes down it.
Bowser Jr. was thrown into a cell in Bowser's Castle as the slasher stands there as Bowser Jr. backs up against a wall.
"Why you sparing me, you killed everyone else" Bowser Jr. said to him.
"Because you are the bait, for my trap to kill the princess, all i need you as a lure to bring her to Bowser's Castle, as the last victim for my plan to control the kingdom" the slasher said with a grin.
"Just one question, who are you?" Bowser Jr. asked as the slasher turns and faces him.
"Who am i, i'm someone you never would have suspected to be the slasher" the slasher replied before removing his mask as Bowser Jr. would notice who the slasher is as his eyes went wide with fear.
"It can't be…" Bowser Jr. said in fear.