Mario watched as Rick was declared the Boy-Who-Lived and Rose was slowly forgotten about , Everyone was so caught up in Rick's new found fame that they stopped caring about her. This went on for a few months before they decided to leave Rose on the doorstep of Lily's sister like a bottle of milk , not even bothering to talk to her sister face to face , she left a note with Rose.
The memory changed to show the sun was in the sky before the door opened by a horse like woman with a long neck and Beatty eyes that when they landed on the small baby on her doorstep let out the loudest scream (and shrillest) he had ever heard before , waking up Rose who with the rude wake up call started crying herself.
Mario could do nothing but watch as after a little bit of time the woman who's name was Petunia and a whale of a man named Vernon tossed his sister in the cupboard under the stars. The memory's of what wen't on in that house towards Rose made Mario want to cry while trying to calm and sooth his sister and even though it was only a memory Mario had the distant impression that Rose could see and hear him some of the time but only rarely.
When Mario saw his Parents take her away from those people before renaming her Luigi he had tears of joy in his eyes. When he was his ten year old past self's reaction to his new little sister he couldn't help a small smile and chuckle at the awe on his face with wide eye's that had wonder in them at the sight of there new baby sister. He watched as the two of them grew older till they were five and fifteen years old , the same age as when there parents died Mario thought with a sinking heart.
Mario watched with tears in his eyes as they got the news of there parents deaths and how after the younger Mario started to distance himself from Luigi and hardly spending and one on one time with her after he started saving Peach. He watched as Luigi stated teaching themselves how to cook cause he was never home to make them anything.
Mario watched in sadness as everyone around Luigi (Even him) forgot her age and gender even her birthday , and he watched as when she was seven she heard him and Peach talking about how he really didn't care for Luigi , Mario had wanted to go back and time and punch himself in the face as he saw the tears in Luigi's eyes before they tuned around and ran out of the castle and back to the house they shared.
Luigi stated getting things she needed to cook with down (Thanks to these memory's Mario noticed that whenever Luigi was tense of to stressed or even sad they tended to cook and try to calm down) But when she was halfway threw making the meal she accidentally cut the top of her finder while slicing the potato's and instead of taking care of it right away she just stared at it for a few moments before smiling and taking a clean knife that was small enough that no one would notice it and yet big enough that it could still cause some harm if someone (Luigi) wasn't careful up to there room and hiding it in her dresser.
Mario was a little confused before when the next memory started he froze while staring at Luigi cutting there wrist's in horror now knowing why they took that knife from the kitchen , He could do nothing but watch as memory after memory went by , and more and more scars started to litter Luigi's arms that they stopped wearing short sleeves and yet nobody noticed.
Mario watched as a now ten Luigi walked to the kitchen to make breakfast and how when they saw the letter on the counter they froze before grabbing it and taking of up the stars to her room. Mario saw that the letter was one from Hogwarts the school her parents went to , to learn how to use there magic , and he saw and read Luigi's replay to it and how he still thought of Mario as a big brother of Family.
Mario watched as Luigi won a haunted Manson (They same one that they killed themselves in , A voice in Mario's head whispered before it was pushed to the back of his mind for now) , Mario saw how when Luigi heard that King Boo had Kidnapped Mario (WHEN DID THIS HAPPEN , Mario yelled in his head he didn't remember this!) they tried to get over their fear of ghosts , they were still scared like hell of them but they were trying there best.
Mario watched as Luigi Fought to get him back from king boo as his past self was stuck in a pitcher. Mario couldn't help but face palm at the reason he had no memory of Luigi saving him was that after they all took a pitcher together he triped and fell down the stars to the Manson when he was leaving hitting his head and losing all memory of what happened that day.
After would's he saw everything up to her hearing Him and peach trying to decide what to do with her after the Mr.L thing (Witch now that he thought of it why was Luigi's alter ego a BOY and not a , oh he don't know , A GIRL!) after that he was kicked out of the pensive.
Mario fell to his knees in front of the couch he had put Luigi on before his trip down memory rode and started sobbing for everything he had done to her , to his little sister , to make her fell that this was the only was out. He was sobbing out sorry's and begging for her to come back to him how he would be a better brother if she would just come back to him.
This was how Peach found him (After finding the Manson of course , she didn't know were it was before today) sobbing on the ground in from of a couch that had Luigi's dead body on it , the sight of the body of Luigi made tears come to her eyes as well , Luigi has large cuts on his wrist's with dried blood around them (Not seeing the scars on those thin arms) and they had a bruse around there neck in the shape of a rope.
Walking up to Mario , Peach got on her knees and took him into her arms just letting him cry , cause what was she supposed to say to someone who had just lost someone they cared about to one of the worst ways to lose them , Suicide.